diff --git a/resources/bytecode/javFiles/Matrix.jav b/resources/bytecode/javFiles/Matrix.jav
index f8c426b4..b94c0783 100644
--- a/resources/bytecode/javFiles/Matrix.jav
+++ b/resources/bytecode/javFiles/Matrix.jav
@@ -1,6 +1,6 @@
 import java.util.Vector;
 import java.lang.Integer;
-import java.lang.Float;
+//import java.lang.Float;
 //import java.lang.Byte;
 //import java.lang.Boolean;
 
diff --git a/src/main/java/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java b/src/main/java/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java
index 2857d015..ecd7600f 100644
--- a/src/main/java/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java
+++ b/src/main/java/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java
@@ -610,8 +610,8 @@ public class TYPEStmt implements StatementVisitor{
         //Fuer Bytecodegenerierung PL 2020-03-09 wird derzeit nicht benutzt ENDE
         
       
-        methodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.EQUALSDOT));
-        extendsMethodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.EQUALSDOT));
+        methodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.SMALLERDOT));
+        extendsMethodConstraint.add(new Pair(assumption.getReturnType(resolver), forMethod.getType(), PairOperator.SMALLERDOT));
         
         Set<Pair> parameterContraints = generateParameterConstraints(forMethod, assumption, info, resolver);
         
diff --git a/src/test/java/targetast/TestComplete.java b/src/test/java/targetast/TestComplete.java
index 1b39618d..34d1370f 100644
--- a/src/test/java/targetast/TestComplete.java
+++ b/src/test/java/targetast/TestComplete.java
@@ -279,6 +279,32 @@ public class TestComplete {
         assertEquals(result, instanceOfClass_m3);
     }
 
+    @Test
+    public void scalarTest() throws Exception {
+        var classFiles = generateClassFiles(new ByteArrayClassLoader(), "Scalar.jav");
+        var scalar = classFiles.get("Scalar");
+
+        Vector<Vector<Integer>> vv = new Vector<>();
+        Vector<Integer> v1 = new Vector<> ();
+        v1.addElement(2);
+        v1.addElement(2);
+        
+        var instanceOfClass_s1 = scalar.getDeclaredConstructor(Vector.class).newInstance(v1);
+
+        Vector<Integer> v2 = new Vector<> ();
+        v2.addElement(2);
+        v2.addElement(2);
+
+        var instanceOfClass_s2 = scalar.getDeclaredConstructor(Vector.class).newInstance(v2);
+
+        var mul = scalar.getDeclaredMethod("mul", Vector.class);
+        var result = mul.invoke(instanceOfClass_s1, instanceOfClass_s2);
+        System.out.println(instanceOfClass_s1.toString() + " * " + instanceOfClass_s2.toString() + " = " + result.toString());
+
+        assertEquals(result, 8);
+    }
+
+    
     @Test
     public void mergeTest() throws Exception {
         var classFiles = generateClassFiles(new ByteArrayClassLoader(), "Merge.jav");