diff --git a/src/core/lib/iomgr/combiner.h b/src/core/lib/iomgr/combiner.h
index c7aa08661747c2cbd6552f491b3f24dabf23d873..75dcb0b70a4268e97c4c20b77dc3f28826d4539d 100644
--- a/src/core/lib/iomgr/combiner.h
+++ b/src/core/lib/iomgr/combiner.h
@@ -65,6 +65,7 @@ grpc_combiner *grpc_combiner_create(grpc_workqueue *optional_workqueue);
 #endif
 
 // Ref/unref the lock, for when we're sharing the lock ownership
+// Prefer to use the macros above
 grpc_combiner *grpc_combiner_ref(grpc_combiner *lock GRPC_COMBINER_DEBUG_ARGS);
 void grpc_combiner_unref(grpc_exec_ctx *exec_ctx,
                          grpc_combiner *lock GRPC_COMBINER_DEBUG_ARGS);