diff --git a/src/Generator/Passes/RenamePass.cs b/src/Generator/Passes/RenamePass.cs
index 541ee46d..cc13910e 100644
--- a/src/Generator/Passes/RenamePass.cs
+++ b/src/Generator/Passes/RenamePass.cs
@@ -17,7 +17,7 @@ namespace CppSharp.Passes
         {
             public bool Equals(Parameter x, Parameter y)
             {
-                return x.QualifiedType.ToString() == y.QualifiedType.ToString();
+                return x.QualifiedType == y.QualifiedType;
             }
 
             public int GetHashCode(Parameter obj)