diff --git a/scripts/remove b/scripts/remove
index 43c57b4..ec0cb08 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -81,7 +81,7 @@ ynh_secure_remove --file="$final_path"
 #=================================================
 
 # Remove the data directory if --purge option is used
-if [ "$YNH_APP_PURGE" -eq 1 ]
+if [ "${YNH_APP_PURGE:-0}" -eq 1 ]
 then
 	ynh_script_progression --message="Removing app data directory..." --time --weight=1
 	ynh_secure_remove --file="$datadir"