diff --git a/modules/create_archive b/modules/create_archive
index bbe91fd..cc9dbed 100755
--- a/modules/create_archive
+++ b/modules/create_archive
@@ -46,15 +46,19 @@ get_volumes() {
 	local input_file="$1"
 	local size="${2:-}"
 	local volumes=""
-	local smart_size
+	local smart_size=""
 
 	if [[ -n "$size" ]]; then
 		log "INFO" "Volumes size is set to ${size}MB"
-		smart_size="$(calc_smart_volumes "$input_file" "$size" || echo -n)"
-		volumes="-v${smart_size}m"
+		smart_size="$(calc_smart_volumes "$input_file" "$size" || true)"
 	fi
 
-	[[ -n "$volumes" ]] && log "INFO" "Volumes set to '$volumes'" || log "INFO" "Volumes argument unset"
+	if [[ -n "$smart_size" ]]; then
+		volumes="-v${smart_size}m"
+		log "INFO" "Volumes set to '$volumes'"
+	else
+		log "INFO" "Volumes argument unset"
+	fi
 
 	echo "$volumes"
 }