diff --git a/src/de/dhbwstuttgart/syntaxtree/FieldDeclaration.java b/src/de/dhbwstuttgart/syntaxtree/FieldDeclaration.java
index 08f0df8d..7cc3c54b 100644
--- a/src/de/dhbwstuttgart/syntaxtree/FieldDeclaration.java
+++ b/src/de/dhbwstuttgart/syntaxtree/FieldDeclaration.java
@@ -180,7 +180,13 @@ public class FieldDeclaration extends Field{
 	    //Die Felddekleration an den Konstruktor anhängen:
 	    InstructionList il = new InstructionList();
 	    il.append(new This(this).genByteCode(cg, rs));
-	    il.append(this.wert.genByteCode(cg, rs));
+	    
+	    if(wert != null){
+	    	il.append(this.wert.genByteCode(cg, rs));
+	    }else{
+	    	//todo: default wert?
+	    }
+	    
 	    FieldInstruction putFieldInstruction = 
 	    		cg.getInstructionFactory().createFieldAccess(this.getParentClass().getName().toString(), 
 	    				this.getDescription(cg, rs), this.getType().getBytecodeType(cg, rs), Constants.PUTFIELD);