diff --git a/ext/libstrawberry-tagreader/tagreadermessages.proto b/ext/libstrawberry-tagreader/tagreadermessages.proto
index de14d97f3..4b44244ae 100644
--- a/ext/libstrawberry-tagreader/tagreadermessages.proto
+++ b/ext/libstrawberry-tagreader/tagreadermessages.proto
@@ -1,4 +1,4 @@
-syntax = "proto3";
+syntax = "proto2";
 
 package spb.tagreader;