diff --git a/pages/common/flutter.md b/pages/common/flutter.md
index 01489a250e..f8fc0b32a5 100644
--- a/pages/common/flutter.md
+++ b/pages/common/flutter.md
@@ -29,4 +29,4 @@
 
 - Build a release APK targeting most modern smartphones:
 
-`flutter build apk --target-platform {{android-arm}} {{android-arm64}}`
+`flutter build apk --target-platform {{android-arm}},{{android-arm64}}`