--- a/mobile/android/installer/Makefile.in
+++ b/mobile/android/installer/Makefile.in
@@ -1,14 +1,12 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-STANDALONE_MAKEFILE := 1
-
 # overwrite mobile-l10n.js with a matchOS=true one for multi-locale builds
 ifeq ($(AB_CD),multi)
 L10N_PREF_JS_EXPORTS = $(srcdir)/mobile-l10n.js
 L10N_PREF_JS_EXPORTS_PATH = $(FINAL_TARGET)/$(PREF_DIR)
 L10N_PREF_JS_EXPORTS_FLAGS = $(PREF_PPFLAGS) --silence-missing-directive-warnings
 PP_TARGETS += L10N_PREF_JS_EXPORTS
 endif
 

--- a/mobile/android/moz.build
+++ b/mobile/android/moz.build
@@ -19,16 +19,17 @@ DIRS += [
     'base',
     'chrome',
     'components',
     'modules',
     'themes/core',
     'app',
     'fonts',
     'geckoview_library',
+    'installer',
 ]
 
 if CONFIG['MOZ_ANDROID_PACKAGE_INSTALL_BOUNCER']:
     DIRS += ['bouncer'] # No ordering implied with respect to base.
 
 TEST_DIRS += [
     'tests',
 ]