diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 80f628b..d6e3a1c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -84,7 +84,7 @@ jobs:
         secret = $IA_SECRET_KEY
         EOF
 
-        ISO_DIR="${{ github.workspace }}/iso"
+        ISO_DIR="${WORKSPACE_DIR}/iso"
         ISO=$(ls "$ISO_DIR"/antergos/*.iso 2>/dev/null | head -1)
         [[ -z "$ISO" || ! -f "$ISO" ]] && { echo "No ISO found"; exit 1; }