diff --git a/gn/flutter_defines.gni b/gn/flutter_defines.gni
index bd0b95d..7e582d3 100644
--- a/gn/flutter_defines.gni
+++ b/gn/flutter_defines.gni
@@ -14,6 +14,7 @@
   "SK_DISABLE_DAA",
 
   # API staging
+  "SK_SUPPORT_LEGACY_PAINT_FONT_FIELDS",
 
   # Flutter doesn't deserialize anything.
   "SK_DISABLE_READBUFFER",