diff --git a/.github/workflows/lgtm.yml b/.github/workflows/lgtm.yml
index 022d89a71..379ca5135 100644
--- a/.github/workflows/lgtm.yml
+++ b/.github/workflows/lgtm.yml
@@ -1,4 +1,5 @@
 name: Send LGTM reaction
+
 on:
   issue_comment:
     types: [created]
@@ -13,3 +14,5 @@ jobs:
       - uses: micnncim/action-lgtm-reaction@master
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          trigger: '["^.?lgtm$"]'