diff --git a/src/main/java/kieker/analysis/trace/traversal/AggrTraceToGraphTransformer.java b/src/main/java/kieker/analysis/trace/traversal/AggrTraceToGraphTransformer.java
index 17966a748b5dcdf748f71e2ec6ef02bb418b4ae4..ccd3a8a76ed8c79d854d8a3d29f97386b8b665c8 100644
--- a/src/main/java/kieker/analysis/trace/traversal/AggrTraceToGraphTransformer.java
+++ b/src/main/java/kieker/analysis/trace/traversal/AggrTraceToGraphTransformer.java
@@ -28,7 +28,7 @@ public class AggrTraceToGraphTransformer extends AbstractTraceToGraphTransformer
 		}
 
 		// TODO Add label
-		return graph.addEdge(null, parentVertex, thisVertex, "ID");
+		return graph.addEdge(null, parentVertex, thisVertex, String.valueOf(operationCall.getOrderIndex()) + '.');
 	}
 
 }
diff --git a/src/main/java/kieker/analysis/trace/traversal/TraceToGraphTransformer.java b/src/main/java/kieker/analysis/trace/traversal/TraceToGraphTransformer.java
index 01f1ad35e133e72b5776d9e96f36d40194d897ee..279728c3dda16cdadd9dddc5fe6bcd8e0339c247 100644
--- a/src/main/java/kieker/analysis/trace/traversal/TraceToGraphTransformer.java
+++ b/src/main/java/kieker/analysis/trace/traversal/TraceToGraphTransformer.java
@@ -27,7 +27,7 @@ public class TraceToGraphTransformer extends AbstractTraceToGraphTransformer<Ope
 		}
 
 		// TODO Add label
-		return graph.addEdge(null, parentVertex, thisVertex, "ID");
+		return graph.addEdge(null, parentVertex, thisVertex, String.valueOf(operationCall.getOrderIndex()) + '.');
 	}
 
 }