diff --git a/.github/workflows/build_apk.yml b/.github/workflows/build_apk.yml
index 1baf502e6..1f11e9fd0 100644
--- a/.github/workflows/build_apk.yml
+++ b/.github/workflows/build_apk.yml
@@ -8,6 +8,9 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./mobile
     steps:
       - uses: actions/checkout@v2