diff --git a/b2g/app/b2g.js b/b2g/app/b2g.js
index 76fc036ea7cf..5d0a7ea82cfc 100644
--- a/b2g/app/b2g.js
+++ b/b2g/app/b2g.js
@@ -991,10 +991,8 @@ pref("touchcaret.enabled", false);
 pref("selectioncaret.enabled", false);
 
 // Enable sync and mozId with Firefox Accounts.
-#ifdef MOZ_SERVICES_FXACCOUNTS
 pref("services.sync.fxaccounts.enabled", true);
 pref("identity.fxaccounts.enabled", true);
-#endif
 
 // Mobile Identity API.
 pref("services.mobileid.server.uri", "https://msisdn-dev.stage.mozaws.net");
diff --git a/b2g/app/moz.build b/b2g/app/moz.build
index a2cf28202489..90a30cf82339 100644
--- a/b2g/app/moz.build
+++ b/b2g/app/moz.build
@@ -19,7 +19,7 @@ if not CONFIG['LIBXUL_SDK']:
 
 DEFINES['XPCOM_GLUE'] = True
 
-for var in ('MOZ_APP_NAME', 'MOZ_APP_VERSION', 'MOZ_UPDATER', 'MOZ_SERVICES_FXACCOUNTS'):
+for var in ('MOZ_APP_NAME', 'MOZ_APP_VERSION', 'MOZ_UPDATER'):
     DEFINES[var] = CONFIG[var]
 
 GENERATED_INCLUDES += [
diff --git a/b2g/chrome/content/shell.js b/b2g/chrome/content/shell.js
index 58ece9d052a9..ea94ceb40f01 100644
--- a/b2g/chrome/content/shell.js
+++ b/b2g/chrome/content/shell.js
@@ -26,10 +26,7 @@ Cu.import('resource://gre/modules/ResourceStatsService.jsm');
 Cu.import('resource://gre/modules/SignInToWebsite.jsm');
 SignInToWebsiteController.init();
 
-#ifdef MOZ_SERVICES_FXACCOUNTS
 Cu.import('resource://gre/modules/FxAccountsMgmtService.jsm');
-#endif
-
 Cu.import('resource://gre/modules/DownloadsAPI.jsm');
 Cu.import('resource://gre/modules/MobileIdentityManager.jsm');
 
diff --git a/b2g/components/B2GComponents.manifest b/b2g/components/B2GComponents.manifest
index 80191f0c49bc..38b641b4674d 100644
--- a/b2g/components/B2GComponents.manifest
+++ b/b2g/components/B2GComponents.manifest
@@ -80,11 +80,9 @@ component {637b0f77-2429-49a0-915f-abf5d0db8b9a} WebappsUpdateTimer.js
 contract @mozilla.org/b2g/webapps-update-timer;1 {637b0f77-2429-49a0-915f-abf5d0db8b9a}
 category update-timer WebappsUpdateTimer @mozilla.org/b2g/webapps-update-timer;1,getService,background-update-timer,webapps.update.interval,86400
 
-#ifdef MOZ_SERVICES_FXACCOUNTS
 # FxAccountsUIGlue.js
 component {51875c14-91d7-4b8c-b65d-3549e101228c} FxAccountsUIGlue.js
 contract @mozilla.org/fxaccounts/fxaccounts-ui-glue;1 {51875c14-91d7-4b8c-b65d-3549e101228c}
-#endif
 
 # HelperAppDialog.js
 component {710322af-e6ae-4b0c-b2c9-1474a87b077e} HelperAppDialog.js
diff --git a/b2g/components/moz.build b/b2g/components/moz.build
index 5c8046ccbf95..81cca8fadbeb 100644
--- a/b2g/components/moz.build
+++ b/b2g/components/moz.build
@@ -12,6 +12,7 @@ EXTRA_COMPONENTS += [
     'B2GAboutRedirector.js',
     'ContentPermissionPrompt.js',
     'FilePicker.js',
+    'FxAccountsUIGlue.js'
     'HelperAppDialog.js',
     'InterAppCommUIGlue.js',
     'MailtoProtocolHandler.js',
@@ -48,6 +49,7 @@ EXTRA_JS_MODULES += [
     'AppFrames.jsm',
     'ContentRequestHelper.jsm',
     'ErrorPage.jsm',
+    'FxAccountsMgmtService.jsm'
     'SignInToWebsite.jsm',
     'SystemAppProxy.jsm',
     'TelURIParser.jsm',
@@ -58,11 +60,3 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] != 'gonk':
     EXTRA_JS_MODULES += [
       'GlobalSimulatorScreen.jsm'
     ]
-
-if CONFIG['MOZ_SERVICES_FXACCOUNTS']:
-    EXTRA_COMPONENTS += [
-        'FxAccountsUIGlue.js'
-    ]
-    EXTRA_JS_MODULES += [
-        'FxAccountsMgmtService.jsm'
-    ]
diff --git a/b2g/confvars.sh b/b2g/confvars.sh
index 2efe690aff64..2eda0389e80a 100644
--- a/b2g/confvars.sh
+++ b/b2g/confvars.sh
@@ -64,8 +64,6 @@ MOZ_FOLD_LIBS=1
 
 MOZ_JSDOWNLOADS=1
 
-MOZ_SERVICES_FXACCOUNTS=1
-
 MOZ_BUNDLED_FONTS=1
 
 # Enable exact rooting on b2g.
diff --git a/b2g/installer/package-manifest.in b/b2g/installer/package-manifest.in
index 139078e538a1..1049754d130d 100644
--- a/b2g/installer/package-manifest.in
+++ b/b2g/installer/package-manifest.in
@@ -832,10 +832,8 @@ bin/components/@DLL_PREFIX@nkgnomevfs@DLL_SUFFIX@
 @BINPATH@/components/SimulatorScreen.js
 #endif
 
-#ifdef MOZ_SERVICES_FXACCOUNTS
 @BINPATH@/components/FxAccountsUIGlue.js
 @BINPATH@/components/services_fxaccounts.xpt
-#endif
 
 @BINPATH@/components/DataStore.manifest
 @BINPATH@/components/DataStoreImpl.js
diff --git a/browser/confvars.sh b/browser/confvars.sh
index 88ff0872a2d0..78cac0afd149 100755
--- a/browser/confvars.sh
+++ b/browser/confvars.sh
@@ -28,7 +28,6 @@ MOZ_DISABLE_EXPORT_JS=1
 MOZ_SAFE_BROWSING=1
 MOZ_SERVICES_COMMON=1
 MOZ_SERVICES_CRYPTO=1
-MOZ_SERVICES_FXACCOUNTS=1
 MOZ_SERVICES_HEALTHREPORT=1
 MOZ_SERVICES_METRICS=1
 MOZ_SERVICES_SYNC=1
diff --git a/configure.in b/configure.in
index 9c15cf7916b9..14a0994ea1be 100644
--- a/configure.in
+++ b/configure.in
@@ -7551,14 +7551,6 @@ if test -n "$MOZ_AUDIO_CHANNEL_MANAGER"; then
 fi
 AC_SUBST(MOZ_AUDIO_CHANNEL_MANAGER)
 
-dnl ========================================================
-dnl = Enable Support for Firefox Accounts (services/fxaccounts)
-dnl ========================================================
-if test -n "$MOZ_SERVICES_FXACCOUNTS"; then
-    AC_DEFINE(MOZ_SERVICES_FXACCOUNTS)
-fi
-AC_SUBST(MOZ_SERVICES_FXACCOUNTS)
-
 dnl ========================================================
 dnl = Support for demangling undefined symbols
 dnl ========================================================
diff --git a/mobile/android/confvars.sh b/mobile/android/confvars.sh
index 31fbde484c89..c2f3a3a1be97 100644
--- a/mobile/android/confvars.sh
+++ b/mobile/android/confvars.sh
@@ -58,9 +58,6 @@ MOZ_PAY=1
 # Enable UI for healthreporter
 MOZ_SERVICES_HEALTHREPORT=1
 
-# Enable FirefoxAccounts
-MOZ_SERVICES_FXACCOUNTS=1
-
 # Wifi-AP/cell tower data reporting is enabled on non-release builds.
 if test ! "$RELEASE_BUILD"; then
 MOZ_DATA_REPORTING=1
diff --git a/python/mozbuild/mozbuild/mozinfo.py b/python/mozbuild/mozbuild/mozinfo.py
index b3e72711df72..cfc77366deef 100755
--- a/python/mozbuild/mozbuild/mozinfo.py
+++ b/python/mozbuild/mozbuild/mozinfo.py
@@ -78,7 +78,6 @@ def build_dict(config, env=os.environ):
     d['debug'] = substs.get('MOZ_DEBUG') == '1'
     d['crashreporter'] = bool(substs.get('MOZ_CRASHREPORTER'))
     d['datareporting'] = bool(substs.get('MOZ_DATA_REPORTING'))
-    d['fxaccounts'] = substs.get('MOZ_SERVICES_FXACCOUNTS') == '1'
     d['healthreport'] = substs.get('MOZ_SERVICES_HEALTHREPORT') == '1'
     d['asan'] = substs.get('MOZ_ASAN') == '1'
     d['tests_enabled'] = substs.get('ENABLE_TESTS') == "1"
diff --git a/services/moz.build b/services/moz.build
index 629969c2e3ad..e75e0914a7a5 100644
--- a/services/moz.build
+++ b/services/moz.build
@@ -6,7 +6,8 @@
 
 PARALLEL_DIRS += [
     'common',
-    'crypto'
+    'crypto',
+    'fxaccounts',
 ]
 
 if CONFIG['MOZ_WIDGET_TOOLKIT'] != 'android':
@@ -21,9 +22,6 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] != 'android':
 if CONFIG['MOZ_SERVICES_METRICS']:
     PARALLEL_DIRS += ['metrics']
 
-if CONFIG['MOZ_SERVICES_FXACCOUNTS']:
-    PARALLEL_DIRS += ['fxaccounts']
-
 if CONFIG['MOZ_SERVICES_SYNC']:
     PARALLEL_DIRS += ['sync']