diff --git a/php/ext/google/protobuf/php-upb.h b/php/ext/google/protobuf/php-upb.h
index 3313bcd4cb..16b7fb310e 100644
--- a/php/ext/google/protobuf/php-upb.h
+++ b/php/ext/google/protobuf/php-upb.h
@@ -1205,7 +1205,7 @@ UPB_API_INLINE bool upb_MiniTableField_IsClosedEnum(
   return f->UPB_PRIVATE(descriptortype) == kUpb_FieldType_Enum;
 }
 
-UPB_INLINE bool upb_MiniTableField_IsInOneof(
+UPB_API_INLINE bool upb_MiniTableField_IsInOneof(
     const struct upb_MiniTableField* f) {
   return f->presence < 0;
 }
diff --git a/ruby/ext/google/protobuf_c/ruby-upb.h b/ruby/ext/google/protobuf_c/ruby-upb.h
index 812f4d8a1f..00d96b45cb 100755
--- a/ruby/ext/google/protobuf_c/ruby-upb.h
+++ b/ruby/ext/google/protobuf_c/ruby-upb.h
@@ -1207,7 +1207,7 @@ UPB_API_INLINE bool upb_MiniTableField_IsClosedEnum(
   return f->UPB_PRIVATE(descriptortype) == kUpb_FieldType_Enum;
 }
 
-UPB_INLINE bool upb_MiniTableField_IsInOneof(
+UPB_API_INLINE bool upb_MiniTableField_IsInOneof(
     const struct upb_MiniTableField* f) {
   return f->presence < 0;
 }