diff --git a/ParseTwitterUtils/Internal/Dialog/PFOAuth1FlowDialog.m b/ParseTwitterUtils/Internal/Dialog/PFOAuth1FlowDialog.m
index 46fd168..0bc6fc5 100644
--- a/ParseTwitterUtils/Internal/Dialog/PFOAuth1FlowDialog.m
+++ b/ParseTwitterUtils/Internal/Dialog/PFOAuth1FlowDialog.m
@@ -497,6 +497,8 @@ - (CGAffineTransform)_transformForOrientation:(UIInterfaceOrientation)orientatio
         case UIInterfaceOrientationPortraitUpsideDown:
             return CGAffineTransformMakeRotation((CGFloat)-M_PI);
             break;
+        case UIInterfaceOrientationPortrait:
+        case UIInterfaceOrientationUnknown:
         default:
             break;
     }