diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/Expression.java b/src/de/dhbwstuttgart/syntaxtree/statement/Expression.java
index 4371bdc1..cb15d409 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/Expression.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/Expression.java
@@ -1,8 +1,6 @@
 
 package de.dhbwstuttgart.syntaxtree.statement;
 
-
-import com.sun.istack.internal.NotNull;
 import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
 import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceBlockInformation;
@@ -13,7 +11,7 @@ public abstract class Expression extends SyntaxTreeNode
 {
     private RefTypeOrTPHOrWildcardOrGeneric type;
 
-    public Expression(@NotNull RefTypeOrTPHOrWildcardOrGeneric type, Token offset){
+    public Expression(RefTypeOrTPHOrWildcardOrGeneric type, Token offset){
         super(offset);
         if(type == null)throw new NullPointerException();
         this.type = type;