diff --git a/src/de/dhbwstuttgart/parser/SyntaxTreeGenerator/StatementGenerator.java b/src/de/dhbwstuttgart/parser/SyntaxTreeGenerator/StatementGenerator.java
index 1586ba3f..679b23df 100644
--- a/src/de/dhbwstuttgart/parser/SyntaxTreeGenerator/StatementGenerator.java
+++ b/src/de/dhbwstuttgart/parser/SyntaxTreeGenerator/StatementGenerator.java
@@ -599,8 +599,8 @@ public class StatementGenerator {
     }
 
     private BinaryExpr.Operator convertBinaryOperator(String operator) {
-
-        return null;
+        //return BinaryExpr.Operator.ADD;
+        throw new NotImplementedException();
     }
 
     private Expression convert(Java8Parser.ShiftExpressionContext expression) {
@@ -612,12 +612,15 @@ public class StatementGenerator {
     }
 
     private Expression convert(Java8Parser.AdditiveExpressionContext expression) {
-        if(expression.additiveExpression() != null){
-            return convert(expression.additiveExpression());
-        }else if(expression.multiplicativeExpression() != null){
+
+        if(expression.additiveExpression() == null){
             return convert(expression.multiplicativeExpression());
-        }else{
-            throw new NotImplementedException();
+        }else {
+            Expression leftSide = convert(expression.additiveExpression());
+            Expression rightSide = convert(expression.multiplicativeExpression());
+            BinaryExpr.Operator op = convertBinaryOperator(expression.getChild(1).getText());
+            Token offset = expression.getStart();
+            return new BinaryExpr(op, TypePlaceholder.fresh(expression.getStart()), leftSide, rightSide, offset);
         }
     }