diff --git a/src/NadekoBot/Modules/Searches/Translate/TranslateService.cs b/src/NadekoBot/Modules/Searches/Translate/TranslateService.cs
index 57dc8fe03..107cf7d26 100644
--- a/src/NadekoBot/Modules/Searches/Translate/TranslateService.cs
+++ b/src/NadekoBot/Modules/Searches/Translate/TranslateService.cs
@@ -100,7 +100,7 @@ public sealed class TranslateService : ITranslateService, IExecNoCommand, IReady
         if (string.IsNullOrWhiteSpace(text))
             throw new ArgumentException("Text is empty or null", nameof(text));
 
-        var res = await _google.Translate(text, source, target);
+        var res = await _google.Translate(text, source.ToLowerInvariant(), target.ToLowerInvariant());
         return res.SanitizeMentions(true);
     }