diff --git a/scripts/_common.sh b/scripts/_common.sh
index fc07b9e..ea2d66e 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -20,7 +20,7 @@ ynh_export () {
             ynh_arg="PATH"
         fi
         ynh_arg="YNH_APP_ARG_$ynh_arg"
-        export $var=${!ynh_arg}
+        export $var="${!ynh_arg}"
     done
 }
 # Save listed var in YunoHost app settings