diff --git a/.gitea/workflows/apk.yaml b/.gitea/workflows/apk.yaml
index e9b6d65..5ddefac 100644
--- a/.gitea/workflows/apk.yaml
+++ b/.gitea/workflows/apk.yaml
@@ -10,7 +10,7 @@ jobs:
       - uses: actions/checkout@v1
         with:
           subpath: dialer/
-      - uses: icing/flutter@main
+      - uses: docker://git.gmoker.com/icing/flutter:main
       - uses: actions/upload-artifact@v1
         with:
           name: icing-dialer-${{ gitea.ref_name }}-${{ gitea.run_id }}.apk
@@ -22,7 +22,7 @@ jobs:
       - uses: actions/checkout@v1
         with:
           subpath: dialer/
-      - uses: icing/flutter@main
+      - uses: docker://git.gmoker.com/icing/flutter:main
         with:
           args: "build apk --dart-define=STEALTH=true"
       - uses: actions/upload-artifact@v1
diff --git a/dialer/build.sh b/dialer/build.sh
index 994a92e..c8f5e05 100755
--- a/dialer/build.sh
+++ b/dialer/build.sh
@@ -2,7 +2,7 @@
 
 IMG=git.gmoker.com/icing/flutter:main
 
-if [ "$1" == -s ]; then
+if [ "$1" == '-s' ]; then
     OPT+=(--dart-define=STEALTH=true)
 fi
 
diff --git a/dialer/run.sh b/dialer/run.sh
index aa71e83..2aa3244 100755
--- a/dialer/run.sh
+++ b/dialer/run.sh
@@ -2,7 +2,7 @@
 
 IMG=git.gmoker.com/icing/flutter:main
 
-if [ "$1" == -s ]; then
+if [ "$1" == '-s' ]; then
     OPT+=(--dart-define=STEALTH=true)
 fi