diff --git a/src/de/dhbwstuttgart/syntaxtree/factory/UnifyTypeFactory.java b/src/de/dhbwstuttgart/syntaxtree/factory/UnifyTypeFactory.java
index a4c40b98..06ea16c1 100644
--- a/src/de/dhbwstuttgart/syntaxtree/factory/UnifyTypeFactory.java
+++ b/src/de/dhbwstuttgart/syntaxtree/factory/UnifyTypeFactory.java
@@ -146,7 +146,12 @@ public class UnifyTypeFactory {
         RefTypeOrTPHOrWildcardOrGeneric tl = UnifyTypeFactory.convert(mp.getLhsType(), tphs);
         RefTypeOrTPHOrWildcardOrGeneric tr = UnifyTypeFactory.convert(mp.getRhsType(), tphs);
         if(tl instanceof TypePlaceholder){
-            if(tr instanceof TypePlaceholder) return new PairTPHsmallerTPH((TypePlaceholder)tl, (TypePlaceholder)tr);
+            if(tr instanceof TypePlaceholder) {
+                if(mp.getPairOp().equals(PairOperator.EQUALSDOT))
+                    return new PairTPHequalRefType((TypePlaceholder)tl, tr);
+                else
+                    return new PairTPHsmallerTPH((TypePlaceholder)tl, (TypePlaceholder)tr);
+            }
             return new PairTPHequalRefType((TypePlaceholder)tl, tr);
         }else throw new NotImplementedException();
     }
diff --git a/src/de/dhbwstuttgart/typeinference/result/ResultSet.java b/src/de/dhbwstuttgart/typeinference/result/ResultSet.java
index 6a1d67f9..2199622b 100644
--- a/src/de/dhbwstuttgart/typeinference/result/ResultSet.java
+++ b/src/de/dhbwstuttgart/typeinference/result/ResultSet.java
@@ -1,5 +1,6 @@
 package de.dhbwstuttgart.typeinference.result;
 
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 import de.dhbwstuttgart.syntaxtree.AbstractASTWalker;
 import de.dhbwstuttgart.syntaxtree.type.*;
 import de.dhbwstuttgart.typeinference.constraints.Pair;
@@ -24,7 +25,8 @@ public class ResultSet {
             type.accept(related);
             return new ResolvedType(type, related.relatedTPHs);
         }else{
-            return new ResolvedType(type,new HashSet<>());
+            throw new NotImplementedException();
+            //return new ResolvedType(type,new HashSet<>());
         }
     }
 
@@ -68,11 +70,29 @@ class Resolver implements ResultSetVisitor {
 
     @Override
     public void visit(PairTPHequalRefType p) {
+        RefTypeOrTPHOrWildcardOrGeneric otherSide = null;
         if(p.left.equals(toResolve)){
             resolved = p.right;
-            RelatedTypeWalker related = new RelatedTypeWalker(null, result);
-            p.right.accept(related);
-            additionalTPHs.addAll(related.relatedTPHs);
+            otherSide = p.left;
+        }
+        if(p.right.equals(toResolve)){
+            resolved = p.left;
+            otherSide = p.right;
+        }
+        if(otherSide != null){
+            if(resolved instanceof RefType){
+                RelatedTypeWalker related = new RelatedTypeWalker(null, result);
+                otherSide.accept(related);
+                additionalTPHs.addAll(related.relatedTPHs);
+            }else if(resolved instanceof TypePlaceholder){
+                Set<ResultPair> newResultSet = new HashSet<>(result.results);
+                newResultSet.remove(p);
+                ResolvedType resolvedType = new Resolver(new ResultSet(newResultSet)).resolve((TypePlaceholder) resolved);
+                this.resolved = resolvedType.resolvedType;
+                this.additionalTPHs.addAll(resolvedType.additionalGenerics);
+            }else {
+                throw new NotImplementedException();
+            }
         }
     }
 
diff --git a/test/typeinference/JavaTXCompilerTest.java b/test/typeinference/JavaTXCompilerTest.java
index 0fccae5c..7ea13498 100644
--- a/test/typeinference/JavaTXCompilerTest.java
+++ b/test/typeinference/JavaTXCompilerTest.java
@@ -49,8 +49,11 @@ public class JavaTXCompilerTest {
         for(File f : compiler.sourceFiles.keySet()){
             SourceFile sf = compiler.sourceFiles.get(f);
             System.out.println(ASTTypePrinter.print(sf));
-            for(ResultSet resultSet : compiler.typeInference()){
+            List<ResultSet> results = compiler.typeInference();
+            assert results.size()>0;
+            for(ResultSet resultSet : results){
                 Set<TypeInsert> result = TypeInsertFactory.createTypeInsertPoints(sf, resultSet);
+                assert result.size()>0;
                 String content = readFile(f.getPath(), StandardCharsets.UTF_8);
                 for(TypeInsert tip : result){
                     System.out.println(tip.insert(content));