diff --git a/internal/dataplane/translator/translate_grpcroute.go b/internal/dataplane/translator/translate_grpcroute.go
index 2487333df1..65f08ad8f9 100644
--- a/internal/dataplane/translator/translate_grpcroute.go
+++ b/internal/dataplane/translator/translate_grpcroute.go
@@ -56,7 +56,7 @@ func (t *Translator) ingressRulesFromGRPCRoute(result *ingressRules, grpcroute *
 		// Create a service and attach the routes to it. Protocol for Service can be set via K8s object annotation
 		// "konghq.com/protocol", by default use "grpcs" to not break existing behavior when annotation is not specified.
 		service, err := generateKongServiceFromBackendRefWithRuleNumber(
-			t.logger, t.storer, result, grpcroute, ruleNumber, "grpcs", grpcBackendRefsToBackendRefs(rule.BackendRefs)...,
+			t.logger, t.storer, result, grpcroute, ruleNumber, "grpc", grpcBackendRefsToBackendRefs(rule.BackendRefs)...,
 		)
 		if err != nil {
 			return err
@@ -124,7 +124,7 @@ func (t *Translator) ingressRulesFromGRPCRouteWithPriority(
 		rules,
 		serviceName,
 		grpcRoute,
-		"grpcs",
+		"grpc",
 		grpcBackendRefsToBackendRefs(grpcRouteRule.BackendRefs)...,
 	)
 	kongService.Routes = append(