diff --git a/org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/extension/data/PrototypeCategory.java b/org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/extension/data/PrototypeCategory.java
index 3388957edc9c53669681cce760f30d94f283aa79..bd61ed109a72971fb9be3e19eecedb86a25a8166 100644
--- a/org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/extension/data/PrototypeCategory.java
+++ b/org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/extension/data/PrototypeCategory.java
@@ -79,4 +79,10 @@ public class PrototypeCategory {
 	public PrototypeCategory getParentCategory() {
 		return parentCategory;
 	}
+
+	/** {@inheritDoc} */
+	@Override
+	public String toString() {
+		return "Prototype category: " + categoryName;
+	}
 }