diff --git a/scripts/upgrade b/scripts/upgrade
index 0c0f789..aa63bbc 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -22,7 +22,7 @@ ynh_script_progression "Upgrading system configurations related to $app..."
 
 ynh_config_add_phpfpm
 
-nh_config_add_nginx
+ynh_config_add_nginx
 
 #=================================================
 # TWEAK IMAGICK CONFIGURATION TO ALLOW PDF THUMBNAILS GENERATION