diff --git a/src/NadekoBot/Migrations/MigrationQueries.cs b/src/NadekoBot/Migrations/MigrationQueries.cs
index 4052f70a5..b0fea9f11 100644
--- a/src/NadekoBot/Migrations/MigrationQueries.cs
+++ b/src/NadekoBot/Migrations/MigrationQueries.cs
@@ -7,7 +7,7 @@ public static class MigrationQueries
 {
     public static void UpdateUsernames(MigrationBuilder migrationBuilder)
     {
-        migrationBuilder.Sql("UPDATE DiscordUser SET Username = '??' + Username WHERE Discriminator = '????';");
+        migrationBuilder.Sql("UPDATE DiscordUser SET Username = '??' || Username WHERE Discriminator = '????';");
     }
     
     public static void MigrateRero(MigrationBuilder migrationBuilder)