diff --git a/.gitattributes b/.gitattributes
index 2d409d8..22b85af 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -7,3 +7,12 @@ proto/testdata/*.bin binary
 # it out of diffs makes reviews readable and stops it inflating language stats.
 server/gen/** linguist-generated=true
 web/src/lib/proto/** linguist-generated=true
+
+# core.autocrlf on Windows would otherwise check these out with CRLF. buf keeps
+# the CR inside comment text, so an empty `//` line reaches the codegen plugin
+# as "\r" instead of "", and the plugin pads non-empty lines with a space. The
+# committed output then carries a trailing space that a LF checkout never
+# produces, and the generated-code sync check fails on Linux.
+*.proto text eol=lf
+server/gen/** text eol=lf
+web/src/lib/proto/** text eol=lf
diff --git a/web/src/lib/proto/noitu/v1/game_pb.d.ts b/web/src/lib/proto/noitu/v1/game_pb.d.ts
index 2615cbd..c459b7c 100644
--- a/web/src/lib/proto/noitu/v1/game_pb.d.ts
+++ b/web/src/lib/proto/noitu/v1/game_pb.d.ts
@@ -137,7 +137,7 @@ export declare const ResignSchema: GenMessage<Resign>;
 
 /**
  * RequestRematch asks to play again in the same room after a game ends.
- * 
+ *
  * There is no matching decline: leaving the room is the decline, and the
  * server already learns about that from the socket closing. One message and
  * one timeout cover every way a rematch does not happen.