diff --git a/tools/leaderelection/resourcelock/leaselock.go b/tools/leaderelection/resourcelock/leaselock.go
index 79a748b74..b03e3c128 100644
--- a/tools/leaderelection/resourcelock/leaselock.go
+++ b/tools/leaderelection/resourcelock/leaselock.go
@@ -105,7 +105,7 @@ func (ll *LeaseLock) RecordEvent(s string) {
 	// Populate the type meta, so we don't have to get it from the schema
 	subject.Kind = "Lease"
 	subject.APIVersion = coordinationv1.SchemeGroupVersion.String()
-	ll.LockConfig.EventRecorder.Eventf(subject, corev1.EventTypeNormal, "LeaderElection", events)
+	ll.LockConfig.EventRecorder.Eventf(subject, corev1.EventTypeNormal, "LeaderElection", "%s", events)
 }
 
 // Describe is used to convert details on current resource lock
diff --git a/tools/record/event_test.go b/tools/record/event_test.go
index a988a4afc..c5748726f 100644
--- a/tools/record/event_test.go
+++ b/tools/record/event_test.go
@@ -638,7 +638,7 @@ func TestLotsOfEvents(t *testing.T) {
 			APIVersion: "version",
 		}
 		// we need to vary the reason to prevent aggregation
-		go recorder.Eventf(ref, v1.EventTypeNormal, "Reason-"+strconv.Itoa(i), strconv.Itoa(i))
+		go recorder.Eventf(ref, v1.EventTypeNormal, "Reason-"+strconv.Itoa(i), "%s", strconv.Itoa(i))
 	}
 	// Make sure no events were dropped by either of the listeners.
 	for i := 0; i < maxQueuedEvents; i++ {