diff --git a/mobile/android/base/moz.build b/mobile/android/base/moz.build
index 53bab951b517..f8092f9b7446 100644
--- a/mobile/android/base/moz.build
+++ b/mobile/android/base/moz.build
@@ -39,6 +39,7 @@ mgjar.sources += [
     'mozglue/WebRTCJNITarget.java',
 ]
 mgjar.generated_sources += [
+    'org/mozilla/gecko/AppConstants.java',
     'org/mozilla/gecko/mozglue/GeckoLoader.java',
 ]
 mgjar.javac_flags += ['-Xlint:all']
@@ -456,7 +457,6 @@ gbjar.sources += [ thirdparty_source_dir + f for f in [
 ] ]
 android_package_dir = CONFIG['ANDROID_PACKAGE_NAME'].replace('.', '/')
 gbjar.generated_sources += [
-    'org/mozilla/gecko/AppConstants.java',
     'org/mozilla/gecko/SysInfo.java',
     'org/mozilla/gecko/widget/ThemedEditText.java',
     'org/mozilla/gecko/widget/ThemedImageButton.java',