diff --git a/src/main/java/de/dhbwstuttgart/bytecode/insertGenerics/FamilyOfGeneratedGenerics.java b/src/main/java/de/dhbwstuttgart/bytecode/insertGenerics/FamilyOfGeneratedGenerics.java
index 2c8c92f8..46d00146 100644
--- a/src/main/java/de/dhbwstuttgart/bytecode/insertGenerics/FamilyOfGeneratedGenerics.java
+++ b/src/main/java/de/dhbwstuttgart/bytecode/insertGenerics/FamilyOfGeneratedGenerics.java
@@ -50,6 +50,7 @@ public class FamilyOfGeneratedGenerics {
      * {T < .T' | T is a type variable in a type of a node of a field}
      */
     public static List<ClassConstraint> typeOfANodeOfAField(List<TPHConstraint> allConstraints, List<ClassConstraint> cs_cl, HashMap<String, PositionFinder.Position> posOfTphs) {
+        //RuntimeException re = new RuntimeException("enthält EQUALS-Relation");
         List<ClassConstraint> tempCC= new ArrayList<>();
         for(TPHConstraint allCons: allConstraints){
             if(posOfTphs.containsKey(allCons.getLeft()) && allCons.getRight()!=null && allCons.getRel()==Relation.EXTENDS) {
@@ -62,6 +63,9 @@ public class FamilyOfGeneratedGenerics {
                     }
                 }
             }
+            /*else if (allCons.getRel() != Relation.EXTENDS) {
+                throw re;
+            }*/
         }
         return tempCC;
     }
@@ -97,19 +101,13 @@ public class FamilyOfGeneratedGenerics {
         for(TPHConstraint allCons: allConstraints) {
             for(ClassConstraint cCons: cs_cl) {
                 for(String tph: posOfTphs.keySet()) {
-                    for(int i=0; i<allConstraints.size(); i++) {
-                        if( ((posOfTphs.get(tph) == PositionFinder.Position.FIELD) ||
-                                (posOfTphs.containsKey(cCons.getRight()) && cCons.getRight() == tph && cCons.getLeft() != null))  &&
-                                cCons.getRel()==Relation.EXTENDS &&
-//                                    (allCons.getLeft() == tph && allCons.getRight() == null) &&
-//                                    (tph != allCons.getLeft()) &&
-//                                    (allConstraints.in.getLeft() != tph))
-                                allConstraints.get(i).getLeft() != tph  &&
-                                allCons.getRel()==Relation.EXTENDS) {
-                            ClassConstraint consToAdd = new ClassConstraint(cCons.getRight(), "Object", Relation.EXTENDS);
-                            if (!checkForDuplicates(consToAdd, tempCC)){
-                                tempCC.add(consToAdd);
-                            }
+                    boolean tvInField = posOfTphs.get(tph) == PositionFinder.Position.FIELD;
+                    boolean hasSmallerTVInClCons = (posOfTphs.containsKey(cCons.getRight()) && cCons.getRight() == tph && cCons.getLeft() != null);
+                    if( ((tvInField || hasSmallerTVInClCons) && cCons.getRel()==Relation.EXTENDS) &&
+                            checkUpperBound(allConstraints, tph)  && allCons.getRel()==Relation.EXTENDS) {
+                        ClassConstraint consToAdd = new ClassConstraint(tph, "Object", Relation.EXTENDS);
+                        if (!checkForDuplicates(consToAdd, tempCC)){
+                            tempCC.add(consToAdd);
                         }
                     }
                 }
@@ -117,10 +115,16 @@ public class FamilyOfGeneratedGenerics {
         }
         return tempCC;
     }
-/*
 
+    public static boolean checkUpperBound(List<TPHConstraint> cs, String tph) {
+        for(int i=0; i<cs.size(); i++) {
+            if(cs.get(i).getLeft() == tph) {
+                return false;
+            }
+        }
+        return true;
+    }
 
-    */
 /**
      * Def. FGG: erste Zeile von cs_m
      * {T < .T' | T is a type variable in a type of the method/constructor m in cl_\sigma, (T <. T') \in cs}