diff --git a/src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h b/src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h
index 671fb9a60b4..3599f881bb1 100644
--- a/src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h
+++ b/src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h
@@ -33,8 +33,8 @@
 /* Automatically generated nanopb header */
 /* Generated by nanopb-0.3.5-dev */
 
-#ifndef GRPC_CORE_LIB_PROTO_GRPC_LB_V0_LOAD_BALANCER_PB_H0_LOAD_BALANCER_PB_H
-#define GRPC_CORE_LIB_PROTO_GRPC_LB_V0_LOAD_BALANCER_PB_H0_LOAD_BALANCER_PB_H
+#ifndef PB_LOAD_BALANCER_PB_H_INCLUDED
+#define PB_LOAD_BALANCER_PB_H_INCLUDED
 #include "third_party/nanopb/pb.h"
 #if PB_PROTO_HEADER_VERSION != 30
 #error Regenerate this file with the current version of nanopb generator.
@@ -179,4 +179,4 @@ extern const pb_field_t grpc_lb_v0_Server_fields[5];
 } /* extern "C" */
 #endif
 
-#endif /* GRPC_CORE_LIB_PROTO_GRPC_LB_V0_LOAD_BALANCER_PB_H */
+#endif