diff --git a/native/mod_manager/mod_manager.c b/native/mod_manager/mod_manager.c
index 45e03d43..cdaa8262 100644
--- a/native/mod_manager/mod_manager.c
+++ b/native/mod_manager/mod_manager.c
@@ -1357,7 +1357,9 @@ static char *process_config(request_rec *r, char **ptr, int *errtype)
             return err_msg;
         }
         /* Node part */
+        ap_assert(loc_lock_nodes() == APR_SUCCESS);
         err_msg = process_config_node(ptr[i], ptr[i + 1], &nodeinfo, errtype);
+        loc_unlock_nodes();
         if (err_msg != NULL) {
             return err_msg;
         }