diff --git a/ios/Flutter/Zulip.xcconfig b/ios/Flutter/Zulip.xcconfig
index 983df5ef51..551f0909db 100644
--- a/ios/Flutter/Zulip.xcconfig
+++ b/ios/Flutter/Zulip.xcconfig
@@ -1,10 +1,2 @@
 // Configuration settings file format documentation can be found at:
 // https://help.apple.com/xcode/#/dev745c5c974
-
-// TODO(firebase/flutterfire#13323): remove this flag
-//
-// This flag is added to work around the iOS build failing
-// on Xcode 16.  Remove it when `package:firebase_messaging`
-// is patched with a fix to build successfully on Xcode 16:
-//   https://github.com/firebase/flutterfire/issues/13323
-CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES=YES