diff --git a/scripts/android.sh b/scripts/android.sh
index cb545ef..5533e2c 100755
--- a/scripts/android.sh
+++ b/scripts/android.sh
@@ -61,7 +61,7 @@ function build_lib() {
 ### Build application
 function build_apk() {
   flavor=$3
-  [[ flavor == "" ]] && flavor="local"
+  [[ -z "$flavor" ]] && flavor="local"
   cd android || exit 1
   ./gradlew clean
   # Build signed apk if keystore exists