diff --git a/modules/archive.sh b/modules/archive.sh
index d9ea711..7c3196b 100755
--- a/modules/archive.sh
+++ b/modules/archive.sh
@@ -19,11 +19,7 @@ check_input() {
 
 	[[ -e "$input_file" ]] || { log "ERROR" "Input file '${input_file}' does not exist"; exit 2; }
 	[[ -n "${password}" ]] || { log "ERROR" "No password given"; exit 2; }
-
-	if [[ ! "$size" =~ ^([1-9][0-9]*)?$ ]]; then
-		log "ERROR" "Invalid size '$size', must be empty or a positive number"
-		exit 2
-	fi
+	[[ "$size" =~ ^([1-9][0-9]*)?$ ]] || { log "ERROR" "Invalid size '$size', must be empty or a positive number"; exit 2; }
 }
 
 calc_smart_volumes() {
@@ -93,10 +89,7 @@ main() {
 	check_dependencies "7z"
 	check_input "$input_file" "$password" "$size"
 
-	if ! mkdir -p "$archive_dir"; then
-		log "ERROR" "Unable to create archive directory"
-		exit 1
-	fi
+	mkdir -p "$archive_dir" || { log "ERROR" "Unable to create archive directory"; exit 1; }
 
 	volumes="$(get_volumes "$input_file" "$size")"
 	archive_name="$(generate_name)"