diff --git a/doc/js_tutorials/js_setup/js_usage/js_usage.markdown b/doc/js_tutorials/js_setup/js_usage/js_usage.markdown
index e2191e6d41..5a8c3b87fa 100644
--- a/doc/js_tutorials/js_setup/js_usage/js_usage.markdown
+++ b/doc/js_tutorials/js_setup/js_usage/js_usage.markdown
@@ -82,7 +82,7 @@ In this tutorial, we just show a cv.Mat on screen. To show a cv.Mat, you need a
 
 You can use cv.imshow to show cv.Mat on the canvas.
 @code{.js}
-cv.imshow(mat, "outputCanvas");
+cv.imshow("outputCanvas", mat);
 @endcode
 
 Putting all of the steps together, the final index.html is shown below.