diff --git a/lib/platform/gitlab/index.js b/lib/platform/gitlab/index.js
index adff81942838f0611c1bbec0f17c4b9bdb374553..bb251fc7792555adf97c839d7c3d3a8933918907 100644
--- a/lib/platform/gitlab/index.js
+++ b/lib/platform/gitlab/index.js
@@ -459,7 +459,7 @@ async function commitFilesToBranch(
       const opts = {
         body: {
           branch: branchName,
-          ref: config.basBranch,
+          ref: config.baseBranch,
         },
       };
       await get.post(`projects/${config.repoName}/repository/branches`, opts);