diff --git a/rslib/backend.proto b/rslib/backend.proto
index 10597806f..d4e3df1e1 100644
--- a/rslib/backend.proto
+++ b/rslib/backend.proto
@@ -84,7 +84,7 @@ service BackendService {
 
   // searching
 
-  rpc FilterToSearch (FilterToSearchIn) returns (String);
+  rpc FilterToSearch(FilterToSearchIn) returns (String);
   rpc NormalizeSearch(String) returns (String);
   rpc SearchCards(SearchCardsIn) returns (SearchCardsOut);
   rpc SearchNotes(SearchNotesIn) returns (SearchNotesOut);