diff --git a/metadata/com.calcitem.sanmill.yml b/metadata/com.calcitem.sanmill.yml
index c38eb237df..cf16cd5874 100644
--- a/metadata/com.calcitem.sanmill.yml
+++ b/metadata/com.calcitem.sanmill.yml
@@ -2719,7 +2719,7 @@ Builds:
       - src/ui/qt
       - tests
     prebuild:
-      - export FLUTTER_VERSION=$(sed -n -E "s/.*flutter-version:\s'(.*)'/\1/p" .github/workflows/flutter.yml
+      - export FLUTTER_VERSION=$(sed -n -E "s/.*flutter-version:\s'(.*)'/\1/p" ../../../.github/workflows/flutter.yml
         | head -n 1)
       - pushd $$flutter$$
       - git checkout -f $FLUTTER_VERSION