diff --git a/cuneiform-core/src/main/java/de/huberlin/wbi/cuneiform/core/repl/BaseRepl.java b/cuneiform-core/src/main/java/de/huberlin/wbi/cuneiform/core/repl/BaseRepl.java
index 783ff29..eaae4d6 100644
--- a/cuneiform-core/src/main/java/de/huberlin/wbi/cuneiform/core/repl/BaseRepl.java
+++ b/cuneiform-core/src/main/java/de/huberlin/wbi/cuneiform/core/repl/BaseRepl.java
@@ -72,7 +72,7 @@ public abstract class BaseRepl {
 	public static final int CTL_TICKETSET = 8;
 
 	public static final String LABEL_VERSION = "2.0.2-SNAPSHOT";
-	public static final String LABEL_BUILD = "2015-11-06";
+	public static final String LABEL_BUILD = "2015-12-27";
 
 	private final CfSemanticModelVisitor state;
 	private final Map<UUID,DynamicNodeVisitor> runningMap;
diff --git a/cuneiform-core/src/test/java/de/huberlin/wbi/cuneiform/core/semanticmodel/HashHelperTest.java b/cuneiform-core/src/test/java/de/huberlin/wbi/cuneiform/core/semanticmodel/HashHelperTest.java
new file mode 100644
index 0000000..b8ad669
--- /dev/null
+++ b/cuneiform-core/src/test/java/de/huberlin/wbi/cuneiform/core/semanticmodel/HashHelperTest.java
@@ -0,0 +1,60 @@
+package de.huberlin.wbi.cuneiform.core.semanticmodel;
+
+import org.junit.Test;
+import static org.junit.Assert.assertNotEquals;
+
+import java.util.UUID;
+
+
+public class HashHelperTest {
+
+	
+	@SuppressWarnings("static-method")
+	@Test
+	public void hashPreservesDifferencesBetweenStrings() {
+		
+		String a, b;
+		long h1, h2;
+				
+		a = "bla";
+		b = "blub";
+		
+		h1 = HashHelper.add( 0L, a );
+		h2 = HashHelper.add( 0L, b );
+		
+		assertNotEquals( h1, h2 );
+	}
+	
+	@SuppressWarnings("static-method")
+	@Test
+	public void hashPreservesDifferencesBetweenTickets() {
+		
+		Ticket a, b;
+		long h1, h2;
+		UUID uuid;
+		ForeignLambdaExpr lambda1, lambda2;
+		Block bindingBlock;
+		Prototype prototype;
+		String lang;
+		String body1, body2;
+		
+		uuid = UUID.randomUUID();
+		bindingBlock = new Block();
+		
+		prototype = new Prototype();
+		lang = ForeignLambdaExpr.LANGID_BASH;
+		body1 = "bla";
+		body2 = "blub";
+		
+		lambda1 = new ForeignLambdaExpr( prototype, lang, body1 );
+		lambda2 = new ForeignLambdaExpr( prototype, lang, body2 );
+
+		a = new Ticket( lambda1, bindingBlock, uuid );
+		b = new Ticket( lambda2, bindingBlock, uuid );
+		
+		h1 = HashHelper.add( 0L, a );
+		h2 = HashHelper.add( 0L, b );
+		
+		assertNotEquals( h1, h2 );
+	}
+}