diff --git a/examples/objc/AppRTCMobile/ARDSettingsModel.m b/examples/objc/AppRTCMobile/ARDSettingsModel.m
index ecd6111a8b..34a47a4989 100644
--- a/examples/objc/AppRTCMobile/ARDSettingsModel.m
+++ b/examples/objc/AppRTCMobile/ARDSettingsModel.m
@@ -39,7 +39,11 @@ NS_ASSUME_NONNULL_BEGIN
   NSArray<NSArray<NSNumber *> *> *sortedResolutions =
       [[resolutions allObjects] sortedArrayUsingComparator:^NSComparisonResult(
                                     NSArray<NSNumber *> *obj1, NSArray<NSNumber *> *obj2) {
-        return obj1.firstObject > obj2.firstObject;
+        NSComparisonResult cmp = [obj1.firstObject compare:obj2.firstObject];
+        if (cmp != NSOrderedSame) {
+          return cmp;
+        }
+        return [obj1.lastObject compare:obj2.lastObject];
       }];
 
   NSMutableArray<NSString *> *resolutionStrings = [[NSMutableArray<NSString *> alloc] init];