diff --git a/scripts/ynh_add_swap b/scripts/ynh_add_swap
index 2fd2d8c..ed43730 100644
--- a/scripts/ynh_add_swap
+++ b/scripts/ynh_add_swap
@@ -48,9 +48,11 @@ ynh_add_swap () {
 	# If there's enough space for a swap, and no existing swap here
 	if [ $swap_size -ne 0 ] && [ ! -e /swap_$app ]
 	then
+		echo "I'm in !"
 		# Preallocate space for the swap file, fallocate may sometime not be used, use dd instead in this case
 		if ! fallocate -l ${swap_size}K /swap_$app
 		then
+			echo "I'm also in !"
 			dd if=/dev/zero of=/swap_$app bs=1024 count=${swap_size}
 		fi
 		chmod 0600 /swap_$app