diff --git a/osu.Game/Overlays/Login/SecondFactorAuthForm.cs b/osu.Game/Overlays/Login/SecondFactorAuthForm.cs
index dd79a962f0..3022233e9c 100644
--- a/osu.Game/Overlays/Login/SecondFactorAuthForm.cs
+++ b/osu.Game/Overlays/Login/SecondFactorAuthForm.cs
@@ -121,9 +121,11 @@ namespace osu.Game.Overlays.Login
 
             codeTextBox.Current.BindValueChanged(code =>
             {
-                if (code.NewValue.Trim().Length == 8)
+                string trimmedCode = code.NewValue.Trim();
+
+                if (trimmedCode.Length == 8)
                 {
-                    api.AuthenticateSecondFactor(code.NewValue.Trim());
+                    api.AuthenticateSecondFactor(trimmedCode);
                     codeTextBox.Current.Disabled = true;
                 }
             });