diff --git a/src/core/lib/iomgr/resource_quota.h b/src/core/lib/iomgr/resource_quota.h
index 14475c864e1806538433a171be3c239fec01cb5a..cfacee13ef3747c72bc24aed2e86d0e3e26cbe1c 100644
--- a/src/core/lib/iomgr/resource_quota.h
+++ b/src/core/lib/iomgr/resource_quota.h
@@ -88,8 +88,12 @@ typedef struct grpc_resource_user grpc_resource_user;
 
 grpc_resource_user *grpc_resource_user_create(
     grpc_resource_quota *resource_quota, const char *name);
+
+/* Returns a borrowed reference to the underlying resource quota for this
+   resource user. */
 grpc_resource_quota *grpc_resource_user_quota(
     grpc_resource_user *resource_user);
+
 void grpc_resource_user_ref(grpc_resource_user *resource_user);
 void grpc_resource_user_unref(grpc_exec_ctx *exec_ctx,
                               grpc_resource_user *resource_user);