diff --git a/engine/GruleEngine.go b/engine/GruleEngine.go
index 9e41970a..c5b5b3c2 100755
--- a/engine/GruleEngine.go
+++ b/engine/GruleEngine.go
@@ -259,6 +259,8 @@ func (g *GruleEngine) FetchMatchingRules(dataCtx ast.IDataContext, knowledge *as
 			if can {
 				runnable = append(runnable, v)
 			}
+			// notify all listeners that a rule's when scope has been evaluated.
+			g.notifyEvaluateRuleEntry(cycle+1, v, can)
 		}
 	}
 	log.Debugf("Matching rules length %d.", len(runnable))