diff --git a/test/e2e/apimachinery/flowcontrol.go b/test/e2e/apimachinery/flowcontrol.go
index 65d1057c847..f9c3527057b 100644
--- a/test/e2e/apimachinery/flowcontrol.go
+++ b/test/e2e/apimachinery/flowcontrol.go
@@ -38,7 +38,7 @@ import (
 
 const (
 	requestConcurrencyLimitMetricName      = "apiserver_flowcontrol_request_concurrency_limit"
-	requestConcurrencyLimitMetricLabelName = "priorityLevel"
+	requestConcurrencyLimitMetricLabelName = "priority_level"
 )
 
 var _ = SIGDescribe("API priority and fairness", func() {