diff --git a/Lib/gftools/fonts_public.proto b/Lib/gftools/fonts_public.proto
index f171cc6ee..a9b0eaa5f 100644
--- a/Lib/gftools/fonts_public.proto
+++ b/Lib/gftools/fonts_public.proto
@@ -59,7 +59,7 @@ message FamilyProto {
   //    HANDWRITING
   //    MONOTYPE
   //    SYMBOLS
-  repeated string classifications = 42;
+  repeated string classifications = 23;
 
   // Next = 24
 }