diff --git a/src/main/java/de/dhbwstuttgart/bytecode/TPHExtractor.java b/src/main/java/de/dhbwstuttgart/bytecode/TPHExtractor.java
index 7729eb88..d13ef5f4 100644
--- a/src/main/java/de/dhbwstuttgart/bytecode/TPHExtractor.java
+++ b/src/main/java/de/dhbwstuttgart/bytecode/TPHExtractor.java
@@ -69,6 +69,7 @@ public class TPHExtractor extends AbstractASTWalker {
 
 	Boolean inMethod = false;
 	boolean inLocalOrParamOrReturn = false;
+	Boolean inLambdaExpression = false;
 
 	public final ArrayList<MethodAndTPH> ListOfMethodsAndTph = new ArrayList<>();
 	final ArrayList<ResultPair<TypePlaceholder, TypePlaceholder>> allPairs = new ArrayList<>();
@@ -254,12 +255,19 @@ public class TPHExtractor extends AbstractASTWalker {
 		inMethod = true; 
 	}
 
+	 @Override
+	    public void visit(LambdaExpression lambdaExpression) {
+		 inLambdaExpression = true;
+		 super.visit(lambdaExpression);
+		 inLambdaExpression = false;
+	    }
+	 
 	@Override
     public void visit(Assign assign) {
 		super.visit(assign);
 		RefTypeOrTPHOrWildcardOrGeneric left = resultSet.resolveType(assign.rightSide.getType()).resolvedType;
 		RefTypeOrTPHOrWildcardOrGeneric right = resultSet.resolveType(assign.lefSide.getType()).resolvedType;
-		if (left instanceof TypePlaceholder && methodAndTph.getTphs().contains(((TypePlaceholder)left).getName())) {
+		if (left instanceof TypePlaceholder && methodAndTph.getLocalTphs().contains(((TypePlaceholder)left).getName())) {
 			if (right instanceof TypePlaceholder) {
 				methodAndTph.addPair(allPairs.stream().filter(
 						p -> (p.getLeft() instanceof TypePlaceholder && 
@@ -292,6 +300,7 @@ public class TPHExtractor extends AbstractASTWalker {
 					 || (((ExpressionReceiver)methodCall.receiver).expr instanceof LocalVar) &&
 							 nameToField.keySet().contains(fieldOrMethName = ((LocalVar)((ExpressionReceiver)methodCall.receiver).expr).name)
 					)
+					//LOKALE VARIABLEN MUESSE NOCH IN nameToField EINGETRAGEN WERDEN
 			   )
 		   ) 
 		{
@@ -309,7 +318,7 @@ public class TPHExtractor extends AbstractASTWalker {
 			          .forEach(x -> {
 			        	  RefTypeOrTPHOrWildcardOrGeneric left = resultSet.resolveType(x.getType()).resolvedType;
 			        	  RefTypeOrTPHOrWildcardOrGeneric right =  resultSet.resolveType(paraIt.next()).resolvedType;
-			        	  if (left instanceof TypePlaceholder && methodAndTph.getTphs().contains(((TypePlaceholder)left).getName())) { 
+			        	  if (left instanceof TypePlaceholder && methodAndTph.getLocalTphs().contains(((TypePlaceholder)left).getName())) { 
 			        		  if (right instanceof TypePlaceholder) {
 			        			  methodAndTph.addPair(allPairs.stream().filter(
         							  p -> (p.getLeft() instanceof TypePlaceholder && 
@@ -327,19 +336,21 @@ public class TPHExtractor extends AbstractASTWalker {
 	@Override
     public void visit(Return aReturn) {
 		super.visit(aReturn);
-		RefTypeOrTPHOrWildcardOrGeneric left = resultSet.resolveType(aReturn.retexpr.getType()).resolvedType;
-		RefTypeOrTPHOrWildcardOrGeneric right = resultSet.resolveType(methodAndTph.getReturnType()).resolvedType;
-		if (left instanceof TypePlaceholder && methodAndTph.getTphs().contains(((TypePlaceholder)left).getName())) { 
-		  if (right instanceof TypePlaceholder) {
-			methodAndTph.addPair(allPairs.stream().filter(
+		if (!inLambdaExpression) {
+			RefTypeOrTPHOrWildcardOrGeneric left = resultSet.resolveType(aReturn.retexpr.getType()).resolvedType;
+			RefTypeOrTPHOrWildcardOrGeneric right = resultSet.resolveType(methodAndTph.getReturnType()).resolvedType;
+			if (left instanceof TypePlaceholder && methodAndTph.getLocalTphs().contains(((TypePlaceholder)left).getName())) { 
+				if (right instanceof TypePlaceholder) {
+					methodAndTph.addPair(allPairs.stream().filter(
 					  p -> (p.getLeft() instanceof TypePlaceholder && 
 					        p.getRight() instanceof TypePlaceholder) &&
 					        ((TypePlaceholder)p.getLeft()).getName().equals(((TypePlaceholder)left).getName()) &&
 			                ((TypePlaceholder)p.getRight()).getName().equals(((TypePlaceholder)right).getName())
 					).findFirst()
 				     .get());
-			  }
-		  }
+				}
+			}
+		}
     }
 	
 	
diff --git a/src/main/java/de/dhbwstuttgart/bytecode/insertGenerics/FamilyOfGeneratedGenerics.java b/src/main/java/de/dhbwstuttgart/bytecode/insertGenerics/FamilyOfGeneratedGenerics.java
index 77d17f00..9de58c59 100644
--- a/src/main/java/de/dhbwstuttgart/bytecode/insertGenerics/FamilyOfGeneratedGenerics.java
+++ b/src/main/java/de/dhbwstuttgart/bytecode/insertGenerics/FamilyOfGeneratedGenerics.java
@@ -69,9 +69,9 @@ public class FamilyOfGeneratedGenerics {
     		                                                  ArrayList<ResultPair<TypePlaceholder, TypePlaceholder>> methodConstraints1Pairs,
     		                                                  List<MethodAndTPH> listOfMethodsAndTph) {
         List<MethodConstraint> cs_m = new ArrayList<>();
-        List<MethodConstraint> methodConstraints1 = typeOfTheMethodInClSigma(cs, posOfTphs);
+        //List<MethodConstraint> methodConstraints1 = typeOfTheMethodInClSigma(cs, posOfTphs);
         
-        List<MethodConstraint> methodConstraints1prime = 
+        List<MethodConstraint> methodConstraints1 = 
         		methodConstraints1Pairs.stream()
         							   .map(p -> new MethodConstraint(p.getLeft().getName(), p.getRight().getName(), Relation.EXTENDS))
         							   .collect(Collectors.toList());