diff --git a/modules/highgui/include/opencv2/highgui/cap_ios.h b/modules/highgui/include/opencv2/highgui/cap_ios.h
index db3928f13..82230550f 100644
--- a/modules/highgui/include/opencv2/highgui/cap_ios.h
+++ b/modules/highgui/include/opencv2/highgui/cap_ios.h
@@ -142,6 +142,7 @@
 - (void)layoutPreviewLayer;
 - (void)saveVideo;
 - (NSURL *)videoFileURL;
+- (NSString *)videoFileString;
 
 
 @end