diff --git a/src/main/java/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java b/src/main/java/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
index 02a07fb84..dfc63d4cf 100644
--- a/src/main/java/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
+++ b/src/main/java/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
@@ -820,16 +820,26 @@ public class BytecodeGenMethod implements StatementVisitor {
 						mDesc = helper.getDescriptorOfApplyMethod(methCallType);
 						//ToDo Etienne: check if it works
 						//helper.generateBCForFunN(mDesc);
+						FunN f;
 						ASTToIntermediate converter = new ASTToIntermediate();
-						IntermediateInnerType returnType = converter.convert(methodCall.receiver.getType());
+						IntermediateInnerType returnType = (IntermediateInnerType) converter.convert(methodCall.receiver.getType());
+						if(methodCall
+								.arglist
+								.getArguments().size() > 0){
 						List<IntermediateInnerType> arguments = methodCall
 								.arglist
 								.getArguments()
 								.stream()
 								.map(TypableStatement::getType)
 								.map(converter::convert)
+								.filter(t -> t instanceof IntermediateInnerType)
+								.map(t -> (IntermediateInnerType) t)
 								.collect(Collectors.toList());//ToDo
-						FunN f = new FunN(arguments, returnType);
+							f = new FunN(arguments, returnType);
+						} else {
+							f = new FunN(returnType);
+						}
+
 						FunN.writeClassFile(f.getSuperClassName(), f.getSuperBytecode(), path);
 						FunN.writeClassFile(f.getClassName(), f.getBytecode(), path);
 						//ToDo Etienne End
diff --git a/src/main/java/de/dhbwstuttgart/intermediate/convert/ASTToIntermediate.java b/src/main/java/de/dhbwstuttgart/intermediate/convert/ASTToIntermediate.java
index 4e9ef6dce..b9cb47b59 100644
--- a/src/main/java/de/dhbwstuttgart/intermediate/convert/ASTToIntermediate.java
+++ b/src/main/java/de/dhbwstuttgart/intermediate/convert/ASTToIntermediate.java
@@ -3,7 +3,9 @@ package de.dhbwstuttgart.intermediate.convert;
 import de.dhbwstuttgart.exceptions.NotImplementedException;
 import de.dhbwstuttgart.intermediate.generation.FunN;
 import de.dhbwstuttgart.intermediate.types.*;
+import de.dhbwstuttgart.parser.scope.JavaClassName;
 import de.dhbwstuttgart.syntaxtree.type.*;
+import org.objectweb.asm.Type;
 
 import java.util.List;
 import java.util.stream.Collectors;
@@ -12,14 +14,19 @@ public class ASTToIntermediate {
 
     public IntermediateRefType convert(RefType originalType){
         //ToDo Etienne: check if it works
+        System.out.println(originalType.getName());
+        System.out.println(originalType.getParaList().size());
+
         if (originalType.getName().toString().matches("Fun\\d+\\$\\$")){
             ASTToIntermediate converter = new ASTToIntermediate();
             List<RefTypeOrTPHOrWildcardOrGeneric> parameters = originalType.getParaList();
-            IntermediateInnerType returnType = convert(parameters.get(parameters.size() - 1));
+            IntermediateInnerType returnType = (IntermediateInnerType) convert(parameters.get(parameters.size() - 1));
             parameters.remove(parameters.size() - 1);
             return new FunN(parameters
                     .stream()
                     .map(this::convert)
+                    .filter(t -> t instanceof IntermediateInnerType)
+                    .map(t -> (IntermediateInnerType) t)
                     .collect(Collectors.toList()), returnType);
         }
 
@@ -52,13 +59,24 @@ public class ASTToIntermediate {
         return new IntermediateExtendsWildcard((IntermediateInnerType) innerType);
     }
 
+    /*
     public IntermediateWildcard convert(){
         //thows RuntimeException because in the AST is no typ defined which represents a normal wildcard
         throw new NotImplementedException("There is no conversion defined for this type.");
     }
+    */
 
-    public IntermediateRefType convert(RefTypeOrTPHOrWildcardOrGeneric originalType){
-        //default implementation which shouldn't be called because of polymorphism
-        throw new NotImplementedException("There is no conversion defined for this type.");
+    //ToDo Etienne: check if it works
+    public IntermediateRefType convert(TypePlaceholder originalType){
+        return new IntermediateRefType(new JavaClassName(Type.getInternalName(Object.class)));
+    }
+
+    public IntermediateType convert(RefTypeOrTPHOrWildcardOrGeneric originalType){
+        if (originalType instanceof RefType) return convert((RefType) originalType);
+        if (originalType instanceof GenericRefType) return convert((GenericRefType) originalType);
+        if (originalType instanceof SuperWildcardType) return convert((SuperWildcardType) originalType);
+        if (originalType instanceof ExtendsWildcardType) return convert((ExtendsWildcardType) originalType);
+        if (originalType instanceof TypePlaceholder) return convert((TypePlaceholder) originalType);
+        throw new NotImplementedException("There is no conversion defined for this type." + originalType.getClass().getName());
     }
 }