diff --git a/.github/workflows/build_all_targets.yml b/.github/workflows/build_all_targets.yml
index 27881f6724..ee052ee124 100644
--- a/.github/workflows/build_all_targets.yml
+++ b/.github/workflows/build_all_targets.yml
@@ -82,7 +82,7 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: px4_${{matrix.group}}_build_artifacts
-          path: ${{ env.PATH_TO_TARGETS }}
+          path: ${{ fromJson(env.PATH_TO_TARGETS) }}
           compression-level: 0
 
       - name: ccache post-run