diff --git a/.github/workflows/build_push.yml b/.github/workflows/build_push.yml
index 8c52de1e..f9f58f5d 100644
--- a/.github/workflows/build_push.yml
+++ b/.github/workflows/build_push.yml
@@ -35,7 +35,7 @@ jobs:
         run: |
           set -x
           projects=(src/*/*)
-          env CI_CHUNK_NUM = ${#projects[@]}
+          set CI_CHUNK_NUM=${#projects[@]}
           echo "NUM_INDIVIDUAL_MODULES=${#projects[@]}" >> $GITHUB_ENV
 
       # Temporary pause because of leak of tj-actions/changed-files