diff --git a/src/main/java/de/hsrm/compiler/Klang/ContextAnalysis.java b/src/main/java/de/hsrm/compiler/Klang/ContextAnalysis.java
index 2741db7..b9c9da8 100644
--- a/src/main/java/de/hsrm/compiler/Klang/ContextAnalysis.java
+++ b/src/main/java/de/hsrm/compiler/Klang/ContextAnalysis.java
@@ -668,6 +668,15 @@ public class ContextAnalysis extends KlangBaseVisitor<Node> {
     return n;
   }
 
+  @Override
+  public Node visitNullAtom(KlangParser.NullAtomContext ctx) {
+    Node n = new NullExpression();
+    n.type = Type.getNullType();
+    n.line = ctx.start.getLine();
+    n.col = ctx.start.getCharPositionInLine();
+    return n;
+  }
+
   @Override
   public Node visitFunctionDef(KlangParser.FunctionDefContext ctx) {
     String name = ctx.funcName.getText();
diff --git a/src/main/java/de/hsrm/compiler/Klang/visitors/EvalVisitor.java b/src/main/java/de/hsrm/compiler/Klang/visitors/EvalVisitor.java
index 3a99399..d4b458c 100644
--- a/src/main/java/de/hsrm/compiler/Klang/visitors/EvalVisitor.java
+++ b/src/main/java/de/hsrm/compiler/Klang/visitors/EvalVisitor.java
@@ -496,4 +496,10 @@ public class EvalVisitor implements Visitor<Value> {
     return null;
   }
 
+  @Override
+  public Value visit(NullExpression e) {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
 }
\ No newline at end of file
diff --git a/src/main/java/de/hsrm/compiler/Klang/visitors/GenASM.java b/src/main/java/de/hsrm/compiler/Klang/visitors/GenASM.java
index cdf9ac7..966ae17 100644
--- a/src/main/java/de/hsrm/compiler/Klang/visitors/GenASM.java
+++ b/src/main/java/de/hsrm/compiler/Klang/visitors/GenASM.java
@@ -819,4 +819,10 @@ public class GenASM implements Visitor<Void> {
     return null;
   }
 
+  @Override
+  public Void visit(NullExpression e) {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
 }
\ No newline at end of file
diff --git a/src/main/java/de/hsrm/compiler/Klang/visitors/GetVars.java b/src/main/java/de/hsrm/compiler/Klang/visitors/GetVars.java
index eb728fb..926ee4b 100644
--- a/src/main/java/de/hsrm/compiler/Klang/visitors/GetVars.java
+++ b/src/main/java/de/hsrm/compiler/Klang/visitors/GetVars.java
@@ -260,4 +260,9 @@ class GetVars implements Visitor<Void> {
     return null;
   }
 
+  @Override
+  public Void visit(NullExpression e) {
+    return null;
+  }
+
 }
\ No newline at end of file
diff --git a/src/main/java/de/hsrm/compiler/Klang/visitors/PrettyPrintVisitor.java b/src/main/java/de/hsrm/compiler/Klang/visitors/PrettyPrintVisitor.java
index 58d9679..6c7857a 100644
--- a/src/main/java/de/hsrm/compiler/Klang/visitors/PrettyPrintVisitor.java
+++ b/src/main/java/de/hsrm/compiler/Klang/visitors/PrettyPrintVisitor.java
@@ -432,4 +432,10 @@ public class PrettyPrintVisitor implements Visitor<Void> {
     return null;
   }
 
+  @Override
+  public Void visit(NullExpression e) {
+    ex.write("null");
+    return null;
+  }
+
 }
\ No newline at end of file
diff --git a/src/main/java/de/hsrm/compiler/Klang/visitors/Visitor.java b/src/main/java/de/hsrm/compiler/Klang/visitors/Visitor.java
index ece0bd7..597c3bc 100644
--- a/src/main/java/de/hsrm/compiler/Klang/visitors/Visitor.java
+++ b/src/main/java/de/hsrm/compiler/Klang/visitors/Visitor.java
@@ -47,4 +47,5 @@ public interface Visitor<R> {
     R visit(StructField e);
     R visit(StructFieldAccessExpression e);
     R visit(ConstructorCall e);
+    R visit(NullExpression e);
 }
\ No newline at end of file