diff --git a/tests/e2e/e2ematcher/matcher.go b/tests/e2e/e2ematcher/matcher.go
index 7faf15f5..fd410408 100644
--- a/tests/e2e/e2ematcher/matcher.go
+++ b/tests/e2e/e2ematcher/matcher.go
@@ -1,6 +1,8 @@
 package e2ematcher
 
 import (
+	"fmt"
+
 	"github.com/hashicorp/go-multierror"
 )
 
@@ -42,3 +44,11 @@ func Any(ms ...Matcher) Matcher {
 		return retErr
 	})
 }
+
+func MapContainsMatchers[K comparable, V any](m map[K]V) map[string]any {
+	matchers := make(map[string]any, len(m))
+	for k, v := range m {
+		matchers[fmt.Sprint(k)] = ValidatorEq(v)
+	}
+	return matchers
+}
diff --git a/tests/e2e/envfuncsext/nebulacluster-ready-func.go b/tests/e2e/envfuncsext/nebulacluster-ready-func.go
index af873d6d..755d5aed 100644
--- a/tests/e2e/envfuncsext/nebulacluster-ready-func.go
+++ b/tests/e2e/envfuncsext/nebulacluster-ready-func.go
@@ -330,12 +330,7 @@ func isComponentConfigMapExpected(ctx context.Context, cfg *envconf.Config, comp
 		return false
 	}
 
-	matchers := make(map[string]any, len(componentConfigExpected))
-	for k, v := range componentConfigExpected {
-		matchers[k] = e2ematcher.ValidatorEq(v)
-	}
-
-	if err := e2ematcher.Struct(componentConfig, matchers); err != nil {
+	if err := e2ematcher.Struct(componentConfig, e2ematcher.MapContainsMatchers(componentConfigExpected)); err != nil {
 		klog.ErrorS(err, "Waiting for NebulaCluster to be ready but ConfigMap not expected",
 			"namespace", cm.Namespace,
 			"name", cm.Name,