diff --git a/src/fs.h b/src/fs.h
index 585cbf9c3..abb4be254 100644
--- a/src/fs.h
+++ b/src/fs.h
@@ -21,4 +21,4 @@ namespace fsbridge {
     FILE *freopen(const fs::path& p, const char *mode, FILE *stream);
 };
 
-#endif
+#endif // BITCOIN_FS_H