diff --git a/metadata/com.google.zxing.client.android.txt b/metadata/com.google.zxing.client.android.txt
index 976c2437f3..98c04a406c 100644
--- a/metadata/com.google.zxing.client.android.txt
+++ b/metadata/com.google.zxing.client.android.txt
@@ -78,7 +78,7 @@ Build:4.6.3,98
     commit=BS-4.6.3
     target=android-19
     subdir=android
-    prebuild=echo "java.source=7\njava.target=7" >> local.properties
+    prebuild=echo -e "java.source=7\njava.target=7" >> local.properties
     build=$$MVN3$$ package -f ../core/pom.xml
 
 Auto Update Mode:Version BS-%v