diff --git a/de4dot.code/deobfuscators/dotNET_Reactor/v4/Deobfuscator.cs b/de4dot.code/deobfuscators/dotNET_Reactor/v4/Deobfuscator.cs
index b0f2fd22..3a24139d 100644
--- a/de4dot.code/deobfuscators/dotNET_Reactor/v4/Deobfuscator.cs
+++ b/de4dot.code/deobfuscators/dotNET_Reactor/v4/Deobfuscator.cs
@@ -178,7 +178,7 @@ namespace de4dot.code.deobfuscators.dotNET_Reactor.v4 {
 
 		static Regex isRandomName = new Regex(@"^[A-Z]{30,40}$");
 		static Regex isRandomNameMembers = new Regex(@"^[a-zA-Z0-9]{9,11}$");	// methods, fields, props, events
-		static Regex isRandomNameTypes = new Regex(@"^[a-zA-Z0-9]{18,19}(?:`\d+)?$");	// types, namespaces
+		static Regex isRandomNameTypes = new Regex(@"^[a-zA-Z0-9]{18,20}(?:`\d+)?$");	// types, namespaces
 
 		bool CheckValidName(string name, Regex regex) {
 			if (isRandomName.IsMatch(name))