diff --git a/modules/highgui/src/window_cocoa.mm b/modules/highgui/src/window_cocoa.mm
index 5800ab3f94..5e34b502db 100644
--- a/modules/highgui/src/window_cocoa.mm
+++ b/modules/highgui/src/window_cocoa.mm
@@ -197,7 +197,7 @@ CV_IMPL void cvDestroyWindow( const char* name)
     if(window) {
         if ([window styleMask] & NSFullScreenWindowMask) {
             [window toggleFullScreen:nil];
-        } 
+        }
         [window close];
         [windows removeObjectForKey:[NSString stringWithFormat:@"%s", name]];
     }
@@ -731,7 +731,7 @@ void cvSetModeWindow_COCOA( const char* name, double prop_value )
     }
 
     localpool = [[NSAutoreleasePool alloc] init];
-    
+
     // std::cout << "setting mode" << std::endl;
 #if MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_6
     if ( ([window styleMask] & NSFullScreenWindowMask) && prop_value==CV_WINDOW_NORMAL )
@@ -746,11 +746,11 @@ void cvSetModeWindow_COCOA( const char* name, double prop_value )
         // std::cout << "entering fullscreen" << std::endl;
         [window setCollectionBehavior:NSWindowCollectionBehaviorFullScreenPrimary];
 
-        NSScreen* screen = [window screen]; 
+        NSScreen* screen = [window screen];
 
         NSRect frame = [screen frame];
         [window setFrame:frame display:YES];
-        
+
         [window setContentSize:frame.size];
 
         [window toggleFullScreen:nil];