diff --git a/addons/material_maker/doc/node_filter_quantize.rst b/addons/material_maker/doc/node_filter_quantize.rst
index 03c51ff..3751efd 100644
--- a/addons/material_maker/doc/node_filter_quantize.rst
+++ b/addons/material_maker/doc/node_filter_quantize.rst
@@ -1,5 +1,5 @@
 Quantize node
-~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~
 
 The **Quantize** node approximates the colors of the input image.