diff --git a/install.sh b/install.sh
index ba4c901..d39d92b 100755
--- a/install.sh
+++ b/install.sh
@@ -66,7 +66,7 @@ remove_file() {
 check_file() {
 	local path="$1" sha256hash="${2:-}"
 	if [ ! -f "$path" ]; then
-		return
+		return 1
 	fi
 	sha256sum -c - <<< "${sha256hash} ${path}" >/dev/null 2>/dev/null
 }