diff --git a/doc/py_tutorials/py_photo/py_table_of_contents_photo.markdown b/doc/py_tutorials/py_photo/py_table_of_contents_photo.markdown
index 1fd57b98ac..be497e1e21 100644
--- a/doc/py_tutorials/py_photo/py_table_of_contents_photo.markdown
+++ b/doc/py_tutorials/py_photo/py_table_of_contents_photo.markdown
@@ -14,7 +14,7 @@ denoising etc.
     Do you have a old
     degraded photo with many black spots and strokes on it? Take it. Let's try to restore them with a
     technique called image inpainting.
-	
+
 -   @subpage tutorial_py_hdr
 
-    Learn how to merge exposure sequence and process high dynamic range images.
\ No newline at end of file
+    Learn how to merge exposure sequence and process high dynamic range images.