diff --git a/src/Generator/Passes/CleanInvalidDeclNamesPass.cs b/src/Generator/Passes/CleanInvalidDeclNamesPass.cs
index 4672c9dd..6c7ab372 100644
--- a/src/Generator/Passes/CleanInvalidDeclNamesPass.cs
+++ b/src/Generator/Passes/CleanInvalidDeclNamesPass.cs
@@ -71,14 +71,6 @@ namespace CppSharp.Passes
             return base.VisitFunctionDecl(function);
         }
 
-        public override bool VisitFunctionType(FunctionType function, TypeQualifiers quals)
-        {
-            foreach (var arg in function.Parameters)
-                arg.Visit(this);
-
-            return base.VisitFunctionType(function, quals);
-        }
-
         public override bool VisitTypedefDecl(TypedefDecl typedef)
         {
             var @class = typedef.Namespace.FindClass(typedef.Name);
diff --git a/tests/Basic/Basic.cpp b/tests/Basic/Basic.cpp
index fc951cc8..056e1dd4 100644
--- a/tests/Basic/Basic.cpp
+++ b/tests/Basic/Basic.cpp
@@ -168,7 +168,7 @@ Bar indirectReturn()
     return Bar();
 }
 
-int ImplementsAbstractFoo::pureFunction()
+int ImplementsAbstractFoo::pureFunction(int i)
 {
     return 5;
 }
diff --git a/tests/Basic/Basic.cs b/tests/Basic/Basic.cs
index 1739df90..6326e208 100644
--- a/tests/Basic/Basic.cs
+++ b/tests/Basic/Basic.cs
@@ -11,6 +11,12 @@ namespace CppSharp.Tests
         public Basic(GeneratorKind kind)
             : base("Basic", kind)
         {
+
+        }
+
+        public override void SetupPasses(Driver driver)
+        {
+            driver.Options.GenerateAbstractImpls = true;
         }
 
         public override void Preprocess(Driver driver, ASTContext lib)
diff --git a/tests/Basic/Basic.h b/tests/Basic/Basic.h
index b1b45707..47436670 100644
--- a/tests/Basic/Basic.h
+++ b/tests/Basic/Basic.h
@@ -111,7 +111,7 @@ public:
 class DLL_API AbstractFoo
 {
 public:
-    virtual int pureFunction() = 0;
+    virtual int pureFunction(int i) = 0;
     virtual int pureFunction1() = 0;
     virtual int pureFunction2() = 0;
     typedef void (*QTextStreamFunction)(int &);
@@ -120,7 +120,7 @@ public:
 class DLL_API ImplementsAbstractFoo : public AbstractFoo
 {
 public:
-    virtual int pureFunction();
+    virtual int pureFunction(int i);
     virtual int pureFunction1();
     virtual int pureFunction2();
 };