diff --git a/modules/video/doc/motion_analysis_and_object_tracking.rst b/modules/video/doc/motion_analysis_and_object_tracking.rst
index 6830da241..8ea34c68d 100644
--- a/modules/video/doc/motion_analysis_and_object_tracking.rst
+++ b/modules/video/doc/motion_analysis_and_object_tracking.rst
@@ -379,7 +379,8 @@ BackgroundSubtractorMOG::operator()
 
 BackgroundSubtractorMOG::initialize
 -----------------------------------
-.. cpp:function:: void BackgroundSubtractorMOG::initialize(int a)
+
+.. cpp:function:: virtual void BackgroundSubtractorMOG::initialize(Size frameSize, int frameType) 
 
     Re-initiaization method.