diff --git a/src/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java b/src/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java
index a06062c0..3733b7dc 100644
--- a/src/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java
+++ b/src/de/dhbwstuttgart/typeinference/typeAlgo/TYPEStmt.java
@@ -199,7 +199,7 @@ public class TYPEStmt implements StatementVisitor{
             //@see: https://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.14.2
             //Expression muss zu Numeric Convertierbar sein. also von Numeric erben
             RefType number = new RefType(ASTFactory.createClass(Number.class).getClassName(), unaryExpr.getOffset());
-            constraintsSet.addUndConstraint(new Pair(unaryExpr.expr.getType(), number, PairOperator.EQUALSDOT));
+            constraintsSet.addUndConstraint(new Pair(unaryExpr.expr.getType(), number, PairOperator.SMALLERDOT));
             //The type of the postfix increment expression is the type of the variable
             constraintsSet.addUndConstraint(new Pair(unaryExpr.expr.getType(), unaryExpr.getType(), PairOperator.EQUALSDOT));
         }else{