diff --git a/de4dot.code/ObfuscatedFile.cs b/de4dot.code/ObfuscatedFile.cs
index 3f79577d..3330636e 100644
--- a/de4dot.code/ObfuscatedFile.cs
+++ b/de4dot.code/ObfuscatedFile.cs
@@ -407,12 +407,10 @@ namespace de4dot.code {
 		}
 
 		IEnumerable<int> getMethodTokens() {
-			var tokens = new List<int>();
+			if (!userStringDecrypterMethods)
+				return deob.getStringDecrypterMethods();
 
-			if (!userStringDecrypterMethods) {
-				options.StringDecrypterMethods.Clear();
-				options.StringDecrypterMethods.AddRange(deob.getStringDecrypterMethods());
-			}
+			var tokens = new List<int>();
 
 			foreach (var val in options.StringDecrypterMethods) {
 				var tokenStr = val.Trim();
diff --git a/de4dot.code/deobfuscators/Babel_NET/Deobfuscator.cs b/de4dot.code/deobfuscators/Babel_NET/Deobfuscator.cs
index e8bb9ed0..36472ad6 100644
--- a/de4dot.code/deobfuscators/Babel_NET/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/Babel_NET/Deobfuscator.cs
@@ -259,10 +259,10 @@ namespace de4dot.code.deobfuscators.Babel_NET {
 			base.deobfuscateEnd();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			if (stringDecrypter.DecryptMethod != null)
-				list.Add(stringDecrypter.DecryptMethod.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(stringDecrypter.DecryptMethod.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/CliSecure/Deobfuscator.cs b/de4dot.code/deobfuscators/CliSecure/Deobfuscator.cs
index 539cba8a..ba1113c1 100644
--- a/de4dot.code/deobfuscators/CliSecure/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/CliSecure/Deobfuscator.cs
@@ -225,10 +225,10 @@ namespace de4dot.code.deobfuscators.CliSecure {
 			base.deobfuscateEnd();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			if (stringDecrypter.Method != null)
-				list.Add(stringDecrypter.Method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(stringDecrypter.Method.MetadataToken.ToInt32());
 			return list;
 		}
 
diff --git a/de4dot.code/deobfuscators/CodeVeil/Deobfuscator.cs b/de4dot.code/deobfuscators/CodeVeil/Deobfuscator.cs
index 6f98e9ae..4dd868aa 100644
--- a/de4dot.code/deobfuscators/CodeVeil/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/CodeVeil/Deobfuscator.cs
@@ -278,10 +278,10 @@ namespace de4dot.code.deobfuscators.CodeVeil {
 			base.deobfuscateEnd();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			if (stringDecrypter.DecryptMethod != null)
-				list.Add(stringDecrypter.DecryptMethod.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(stringDecrypter.DecryptMethod.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/CryptoObfuscator/Deobfuscator.cs b/de4dot.code/deobfuscators/CryptoObfuscator/Deobfuscator.cs
index 43c0922c..0238c936 100644
--- a/de4dot.code/deobfuscators/CryptoObfuscator/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/CryptoObfuscator/Deobfuscator.cs
@@ -231,10 +231,10 @@ namespace de4dot.code.deobfuscators.CryptoObfuscator {
 			addResourceToBeRemoved(resource, reason);
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			if (stringDecrypter.Method != null)
-				list.Add(stringDecrypter.Method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(stringDecrypter.Method.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/DeepSea/Deobfuscator.cs b/de4dot.code/deobfuscators/DeepSea/Deobfuscator.cs
index 3d495b03..98af2ec1 100644
--- a/de4dot.code/deobfuscators/DeepSea/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/DeepSea/Deobfuscator.cs
@@ -253,10 +253,10 @@ done:
 			removeInlinedMethods(DsInlinedMethodsFinder.find(module));
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			foreach (var method in stringDecrypter.DecrypterMethods)
-				list.Add(method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(method.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/DeobfuscatorBase.cs b/de4dot.code/deobfuscators/DeobfuscatorBase.cs
index 8352a56a..d7909d58 100644
--- a/de4dot.code/deobfuscators/DeobfuscatorBase.cs
+++ b/de4dot.code/deobfuscators/DeobfuscatorBase.cs
@@ -224,9 +224,7 @@ namespace de4dot.code.deobfuscators {
 			}
 		}
 
-		public virtual IEnumerable<string> getStringDecrypterMethods() {
-			return new List<string>();
-		}
+		public abstract IEnumerable<int> getStringDecrypterMethods();
 
 		class MethodCallRemover {
 			Dictionary<string, MethodDefinitionAndDeclaringTypeDict<bool>> methodNameInfos = new Dictionary<string, MethodDefinitionAndDeclaringTypeDict<bool>>();
diff --git a/de4dot.code/deobfuscators/Dotfuscator/Deobfuscator.cs b/de4dot.code/deobfuscators/Dotfuscator/Deobfuscator.cs
index 25813070..4e332fb6 100644
--- a/de4dot.code/deobfuscators/Dotfuscator/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/Dotfuscator/Deobfuscator.cs
@@ -126,10 +126,10 @@ namespace de4dot.code.deobfuscators.Dotfuscator {
 			base.deobfuscateEnd();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			foreach (var method in stringDecrypter.StringDecrypters)
-				list.Add(method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(method.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/Eazfuscator_NET/Deobfuscator.cs b/de4dot.code/deobfuscators/Eazfuscator_NET/Deobfuscator.cs
index 8d742ad9..534f9ac2 100644
--- a/de4dot.code/deobfuscators/Eazfuscator_NET/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/Eazfuscator_NET/Deobfuscator.cs
@@ -545,10 +545,10 @@ namespace de4dot.code.deobfuscators.Eazfuscator_NET {
 			base.deobfuscateEnd();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			if (decryptStringMethod != null)
-				list.Add(decryptStringMethod.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(decryptStringMethod.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/Goliath_NET/Deobfuscator.cs b/de4dot.code/deobfuscators/Goliath_NET/Deobfuscator.cs
index ac15032e..d4ce0294 100644
--- a/de4dot.code/deobfuscators/Goliath_NET/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/Goliath_NET/Deobfuscator.cs
@@ -270,10 +270,10 @@ namespace de4dot.code.deobfuscators.Goliath_NET {
 			findAndRemoveInlinedMethods();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			foreach (var method in stringDecrypter.getMethods())
-				list.Add(method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(method.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/IDeobfuscator.cs b/de4dot.code/deobfuscators/IDeobfuscator.cs
index 873394de..21b2b882 100644
--- a/de4dot.code/deobfuscators/IDeobfuscator.cs
+++ b/de4dot.code/deobfuscators/IDeobfuscator.cs
@@ -107,6 +107,6 @@ namespace de4dot.code.deobfuscators {
 		void deobfuscateEnd();
 
 		// Called to get method token / pattern of string decrypters
-		IEnumerable<string> getStringDecrypterMethods();
+		IEnumerable<int> getStringDecrypterMethods();
 	}
 }
diff --git a/de4dot.code/deobfuscators/Skater_NET/Deobfuscator.cs b/de4dot.code/deobfuscators/Skater_NET/Deobfuscator.cs
index e625ba67..3d09eb37 100644
--- a/de4dot.code/deobfuscators/Skater_NET/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/Skater_NET/Deobfuscator.cs
@@ -118,8 +118,8 @@ namespace de4dot.code.deobfuscators.Skater_NET {
 			base.deobfuscateEnd();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/SmartAssembly/Deobfuscator.cs b/de4dot.code/deobfuscators/SmartAssembly/Deobfuscator.cs
index 03e09fd7..e226c4f7 100644
--- a/de4dot.code/deobfuscators/SmartAssembly/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/SmartAssembly/Deobfuscator.cs
@@ -542,10 +542,10 @@ namespace de4dot.code.deobfuscators.SmartAssembly {
 			}
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			foreach (var method in staticStringInliner.Methods)
-				list.Add(method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(method.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/Spices_Net/Deobfuscator.cs b/de4dot.code/deobfuscators/Spices_Net/Deobfuscator.cs
index ec0067f2..b26ca06c 100644
--- a/de4dot.code/deobfuscators/Spices_Net/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/Spices_Net/Deobfuscator.cs
@@ -208,10 +208,10 @@ namespace de4dot.code.deobfuscators.Spices_Net {
 			}
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			foreach (var info in stringDecrypter.DecrypterInfos)
-				list.Add(info.method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(info.method.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/Unknown/Deobfuscator.cs b/de4dot.code/deobfuscators/Unknown/Deobfuscator.cs
index a6c1bf73..205a8b35 100644
--- a/de4dot.code/deobfuscators/Unknown/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/Unknown/Deobfuscator.cs
@@ -17,6 +17,7 @@
     along with de4dot.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+using System.Collections.Generic;
 using System.Text.RegularExpressions;
 
 namespace de4dot.code.deobfuscators.Unknown {
@@ -112,5 +113,9 @@ namespace de4dot.code.deobfuscators.Unknown {
 			}
 			return null;
 		}
+
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			return new List<int>();
+		}
 	}
 }
diff --git a/de4dot.code/deobfuscators/Xenocode/Deobfuscator.cs b/de4dot.code/deobfuscators/Xenocode/Deobfuscator.cs
index 2cde2af0..fc4cba7e 100644
--- a/de4dot.code/deobfuscators/Xenocode/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/Xenocode/Deobfuscator.cs
@@ -109,10 +109,10 @@ namespace de4dot.code.deobfuscators.Xenocode {
 			base.deobfuscateEnd();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			if (stringDecrypter.Method != null)
-				list.Add(stringDecrypter.Method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(stringDecrypter.Method.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/dotNET_Reactor/v3/Deobfuscator.cs b/de4dot.code/deobfuscators/dotNET_Reactor/v3/Deobfuscator.cs
index f4f880c4..55e9931b 100644
--- a/de4dot.code/deobfuscators/dotNET_Reactor/v3/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/dotNET_Reactor/v3/Deobfuscator.cs
@@ -329,10 +329,10 @@ namespace de4dot.code.deobfuscators.dotNET_Reactor.v3 {
 			findAndRemoveInlinedMethods();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			foreach (var method in decrypterType.StringDecrypters)
-				list.Add(method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(method.MetadataToken.ToInt32());
 			return list;
 		}
 	}
diff --git a/de4dot.code/deobfuscators/dotNET_Reactor/v4/Deobfuscator.cs b/de4dot.code/deobfuscators/dotNET_Reactor/v4/Deobfuscator.cs
index 353c1a83..4e76bd32 100644
--- a/de4dot.code/deobfuscators/dotNET_Reactor/v4/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/dotNET_Reactor/v4/Deobfuscator.cs
@@ -580,12 +580,12 @@ namespace de4dot.code.deobfuscators.dotNET_Reactor.v4 {
 			findAndRemoveInlinedMethods();
 		}
 
-		public override IEnumerable<string> getStringDecrypterMethods() {
-			var list = new List<string>();
+		public override IEnumerable<int> getStringDecrypterMethods() {
+			var list = new List<int>();
 			foreach (var info in stringDecrypter.DecrypterInfos)
-				list.Add(info.method.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(info.method.MetadataToken.ToInt32());
 			if (stringDecrypter.OtherStringDecrypter != null)
-				list.Add(stringDecrypter.OtherStringDecrypter.MetadataToken.ToInt32().ToString("X8"));
+				list.Add(stringDecrypter.OtherStringDecrypter.MetadataToken.ToInt32());
 			return list;
 		}