diff --git a/core/api/src/main/java/org/onosproject/net/flow/criteria/OduSignalIdCriterion.java b/core/api/src/main/java/org/onosproject/net/flow/criteria/OduSignalIdCriterion.java
index cb51339..2101854 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/criteria/OduSignalIdCriterion.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/criteria/OduSignalIdCriterion.java
@@ -74,7 +74,7 @@
 
     @Override
     public String toString() {
-        return  toStringHelper(type().toString())
+        return  toStringHelper(this)
                 .add("oduSignalId", oduSignalId)
                 .toString();
     }