diff --git a/src/main/java/kieker/analysis/dev/dependencygraphs/DotDependencyGraphConfigurationFactory.java b/src/main/java/kieker/analysis/dev/dependencygraphs/DotDependencyGraphConfigurationFactory.java
index c2a07871a3b12222593cbfc7be870bc89200be51..627119fe0021925e4287d8111b18f53ce02178f9 100644
--- a/src/main/java/kieker/analysis/dev/dependencygraphs/DotDependencyGraphConfigurationFactory.java
+++ b/src/main/java/kieker/analysis/dev/dependencygraphs/DotDependencyGraphConfigurationFactory.java
@@ -78,7 +78,7 @@ public class DotDependencyGraphConfigurationFactory {
 		private final String annotation;
 
 		public VertexLabelMapper() {
-			this.annotation = "";
+			this.annotation = null;
 		}
 
 		public VertexLabelMapper(final String annotation) {
@@ -88,8 +88,10 @@ public class DotDependencyGraphConfigurationFactory {
 		@Override
 		public String apply(final Vertex vertex) {
 			final StringBuilder statistics = new StringBuilder();
-			statistics.append(this.annotation);
-			statistics.append("\\n");
+			if (this.annotation != null) {
+				statistics.append(this.annotation);
+				statistics.append("\\n");
+			}
 			statistics.append(vertex.getProperty("Name").toString());
 			statistics.append("\\n");
 			statistics.append(generateStatistics(vertex));