diff --git a/xwords4/android/XWords4/project.properties b/xwords4/android/XWords4/project.properties
index 8937e94b9..cf667f371 100644
--- a/xwords4/android/XWords4/project.properties
+++ b/xwords4/android/XWords4/project.properties
@@ -8,7 +8,7 @@
 # project structure.
 #
 # To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
-#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
+proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
 
 # Project target.
 target=android-14