diff --git a/scripts/upgrade b/scripts/upgrade
index c6fca67..0c7ba55 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -25,10 +25,10 @@ final_path=$(ynh_app_setting_get $app final_path)
 #=================================================
 
 # Fix is_public as a boolean value
-if [ "$is_public" = "Yes" ]; then
+if [ "$is_public,," = "yes" ]; then
 	ynh_app_setting_set $app is_public 1
 	is_public=1
-elif [ "$is_public" = "No" ]; then
+elif [ "$is_public,," = "no" ]; then
 	ynh_app_setting_set $app is_public 0
 	is_public=0
 fi