diff --git a/src/de/dhbwstuttgart/bytecode/Descriptor.java b/src/de/dhbwstuttgart/bytecode/Descriptor.java
index fb57e682..3b024d71 100644
--- a/src/de/dhbwstuttgart/bytecode/Descriptor.java
+++ b/src/de/dhbwstuttgart/bytecode/Descriptor.java
@@ -3,13 +3,14 @@ package de.dhbwstuttgart.bytecode;
 import java.util.List;
 import java.util.Iterator;
 
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 import de.dhbwstuttgart.syntaxtree.Constructor;
 import de.dhbwstuttgart.syntaxtree.FormalParameter;
 import de.dhbwstuttgart.syntaxtree.Method;
 import de.dhbwstuttgart.syntaxtree.statement.ArgumentList;
 import de.dhbwstuttgart.syntaxtree.statement.Expression;
 import de.dhbwstuttgart.syntaxtree.statement.LambdaExpression;
-import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
+import de.dhbwstuttgart.syntaxtree.type.*;
 import de.dhbwstuttgart.typeinference.result.ResultSet;
 
 public class Descriptor {
@@ -20,13 +21,41 @@ public class Descriptor {
 		Iterator<FormalParameter> itr = method.getParameterList().iterator();
 		while(itr.hasNext()) {
 			FormalParameter fp = itr.next();
-			desc = desc + "L"+resultSet.resolveType(fp.getType()).resolvedType.toString().replace(".", "/") + ";";
+			desc = desc + "L"+resultSet.resolveType(fp.getType()).resolvedType.acceptTV(new TypeToDescriptor())+ ";";
 		}
 		desc = addReturnType(desc,method.getReturnType(), resultSet);
 		
 		
 	}
-	
+
+	private class TypeToDescriptor implements TypeVisitor<String>{
+
+		@Override
+		public String visit(RefType refType) {
+			return refType.getName().toString().replace(".", "/");
+		}
+
+		@Override
+		public String visit(SuperWildcardType superWildcardType) {
+			throw new NotImplementedException();
+		}
+
+		@Override
+		public String visit(TypePlaceholder typePlaceholder) {
+			return typePlaceholder.toString();
+		}
+
+		@Override
+		public String visit(ExtendsWildcardType extendsWildcardType) {
+			throw new NotImplementedException();
+		}
+
+		@Override
+		public String visit(GenericRefType genericRefType) {
+			return genericRefType.getParsedName();
+		}
+	}
+
 	private String addReturnType(String desc2, RefTypeOrTPHOrWildcardOrGeneric returnType, ResultSet resultSet) {
 		System.out.println("DescType = "+returnType.toString());
 		if(resultSet.resolveType(returnType).resolvedType.toString().equals("void")){