diff --git a/.github/workflows/weekly_reduceimagesize.yml b/.github/workflows/weekly_reduceimagesize.yml
index 5234def7b..667ee4333 100644
--- a/.github/workflows/weekly_reduceimagesize.yml
+++ b/.github/workflows/weekly_reduceimagesize.yml
@@ -9,6 +9,7 @@ on:
 
 jobs:
   calibre:
+    if: github.repository_owner == 'alexbelgium'
     name: calibreapp/image-actions
     runs-on: ubuntu-latest
     steps: