diff --git a/ChangeLog b/ChangeLog
index 64207534269..692e43505e3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -203,6 +203,7 @@ Fix: [ bug #1905 ] Custom deplacement types do not get translated in deplacement
 Fix: [ bug #2583 ] Unable to create a bank transfer with localized numbers
 Fix: [ bug #2577 ] Incorrect invoice status in "Linked objects" page of a project
 Fix: [ bug #2576 ] Unable to edit a dictionary entry that has # in its ref
+Fix: [ bug #2758 ] Product::update sets product note to "null" when $prod->note is null
 
 ***** ChangeLog for 3.5.6 compared to 3.5.5 *****
 Fix: Avoid missing class error for fetch_thirdparty method #1973
diff --git a/htdocs/product/class/product.class.php b/htdocs/product/class/product.class.php
index 2987d0de8fd..616b306505c 100644
--- a/htdocs/product/class/product.class.php
+++ b/htdocs/product/class/product.class.php
@@ -1482,7 +1482,7 @@ class Product extends CommonObject
 				$this->date_modification		= $obj->tms;
 				$this->import_key				= $obj->import_key;
 				$this->entity					= $obj->entity;
-				
+
 				$this->ref_ext					= $obj->ref_ext;
 
 				$this->db->free($resql);