diff --git a/Classes/NavigationController/UINavigationController+M13ProgressViewBar.m b/Classes/NavigationController/UINavigationController+M13ProgressViewBar.m
index ba0e7fd..6324893 100644
--- a/Classes/NavigationController/UINavigationController+M13ProgressViewBar.m
+++ b/Classes/NavigationController/UINavigationController+M13ProgressViewBar.m
@@ -209,31 +209,10 @@ - (void)updateProgressWithInterfaceOrientation:(UIInterfaceOrientation)interface
     } else {
         backgroundView.backgroundColor = [UIColor clearColor];
     }
-    
-    //Calculate the frame of the navigation bar, based off the orientation.
-    UIView *topView = self.topViewController.view;
-    CGSize screenSize;
-    if (topView) {
-        screenSize = topView.bounds.size;
-    } else {
-        screenSize = [UIScreen mainScreen].bounds.size;
-    }
-    CGFloat width = 0.0;
-    CGFloat height = 0.0;
-    //Calculate the width of the screen
-    if (UIInterfaceOrientationIsLandscape(interfaceOrientation)) {
-        //Use the maximum value
-        width = MAX(screenSize.width, screenSize.height);
-        if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone) {
-            height = 32.0; //Hate hardcoding values, but autolayout doesn't work, and cant retreive the new height until after the animation completes.
-        } else {
-            height = 44.0; //Hate hardcoding values, but autolayout doesn't work, and cant retreive the new height until after the animation completes.
-        }
-    } else {
-        //Use the minimum value
-        width = MIN(screenSize.width, screenSize.height);
-        height = 44.0; //Hate hardcoding values, but autolayout doesn't work, and cant retreive the new height until after the animation completes.
-    }
+
+	//Change the progress and background view frames to match the navigationBar
+	CGFloat width = self.navigationBar.frame.size.width;
+	CGFloat height = self.navigationBar.frame.size.height;
     
     //Check if the progress view is in its superview and if we are showing the bar.
     if (progressView.superview == nil && [self isShowingProgressBar]) {