diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0353c797..85cf315d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,7 @@
 # CHANGELOG
+*1.9.1* (2020-01-08)
+- Delete PHP Notice et Warnings (#251)
+
 *1.9.0* (2020-01-08)
 - New element version 2.0.6
 - Update footer
diff --git a/wp-theme-2018/VERSION b/wp-theme-2018/VERSION
index f8e233b2..9ab8337f 100644
--- a/wp-theme-2018/VERSION
+++ b/wp-theme-2018/VERSION
@@ -1 +1 @@
-1.9.0
+1.9.1
diff --git a/wp-theme-2018/menus/custom-nav-walker.php b/wp-theme-2018/menus/custom-nav-walker.php
index 0a3a4075..2f447ada 100644
--- a/wp-theme-2018/menus/custom-nav-walker.php
+++ b/wp-theme-2018/menus/custom-nav-walker.php
@@ -62,10 +62,16 @@ public function start_lvl( &$output, $depth = 0, $args = array() ) {
 		}
 	}
 
+	/**
+	 * @remark Default value of $args is an empty array but parameter can also be an object (if given)..
+	 * A big thanks to Antistatic who coded like this... #facepalm
+	 */
 	public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
 		$this->currentItem = $item;
 		
-		if(array_key_exists('item_spacing', $args) && $args['item_spacing'] === 'discard') {
+		/* Because $args can be an array or an object, we have to check differently... */
+		if( (is_array($args) && array_key_exists('item_spacing', $args) && $args['item_spacing'] === 'discard') ||
+		    (property_exists($args, 'item_spacing') && $args->item_spacing == 'discard') ) {
 			$t = '';
 			$n = '';
 		} else {
@@ -167,14 +173,27 @@ public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0
 		 */
 		$title = apply_filters( 'nav_menu_item_title', $title, $item, $args, $depth );
 
-		$item_output = array_key_exists('before', $args)? $args['before']:'';
-		$item_output .= '<a'. $attributes .'>';
-		$item_output .= (array_key_exists('link_before', $args)? $args['link_before']:'') . 
-						$title .
-						(array_key_exists('link_after', $args)? $args['link_after']:'');
-		$item_output .= '</a>';
-		$item_output .= array_key_exists('after', $args)? $args['after']:'';
-		
+		if(is_array($args))
+		{
+			$item_output = array_key_exists('before', $args)? $args['before']:'';
+			$item_output .= '<a'. $attributes .'>';
+			$item_output .= (array_key_exists('link_before', $args)? $args['link_before']:'') . 
+							$title .
+							(array_key_exists('link_after', $args)? $args['link_after']:'');
+			$item_output .= '</a>';
+			$item_output .= array_key_exists('after', $args)? $args['after']:'';
+		}
+		else // $args is an object
+		{
+			$item_output = property_exists($args, 'before')? $args->before:'';
+			$item_output .= '<a'. $attributes .'>';
+			$item_output .= (property_exists($args, 'link_before')? $args->link_before:'') . 
+							$title .
+							(property_exists($args, 'link_after')? $args->link_after:'');
+			$item_output .= '</a>';
+			$item_output .= property_exists($args, 'after')? $args->after:'';
+		}
+			
 		if(is_array($item->classes) && in_array('menu-item-has-children', $item->classes)) {
 			$item_output .= '
 						<a href="#" role="button" aria-hidden="true" class="nav-arrow">
diff --git a/wp-theme-2018/style.css b/wp-theme-2018/style.css
index ec8962e3..8d031c41 100644
--- a/wp-theme-2018/style.css
+++ b/wp-theme-2018/style.css
@@ -4,7 +4,7 @@ Theme URI:
 Author: Antistatique.net
 Author URI: http://antistatique.net/
 Description: Description
-Version: 1.9.0
+Version: 1.9.1
 License: GNU General Public License v2 or later
 License URI: LICENSE
 Text Domain: epfl