diff --git a/application/basilisk/components/moz.build b/application/basilisk/components/moz.build
index 359aa88600..dc6e118f9f 100644
--- a/application/basilisk/components/moz.build
+++ b/application/basilisk/components/moz.build
@@ -19,13 +19,15 @@ DIRS += [
     'sessionstore',
     'shell',
     'selfsupport',
-    'sync',
     'translation',
 ]
 
 if CONFIG['MOZ_WEBEXTENSIONS']:
     DIRS += ['webextensions']
 
+if CONFIG['MOZ_SERVICES_SYNC']:
+    DIRS += ['sync']
+
 DIRS += ['build']
 
 XPIDL_SOURCES += [