diff --git a/vars/dist_digest.vars b/vars/dist_digest.vars
index 10377e0..5d28af3 100644
--- a/vars/dist_digest.vars
+++ b/vars/dist_digest.vars
@@ -4,7 +4,7 @@
 
 pkg_dist_digest_all() {
 	local __;
-	if [ "${ARG_TARBALL:-0}" -eq 1 ]; then
+	if [ -n "${ARG_TARBALL}" ]; then
 		log_msg info "Compiling SHA256 sums...";
 		if [ -e "${PREFIX}/SHA256SUMS" ]; then
 			build_fileop mv "${PREFIX}/SHA256SUMS" "${PREFIX}/SHA256SUMS.last";
diff --git a/vars/dist_tarballs.vars b/vars/dist_tarballs.vars
index 5c91865..43f5218 100644
--- a/vars/dist_tarballs.vars
+++ b/vars/dist_tarballs.vars
@@ -66,7 +66,7 @@ pkgp_dist_tarball_src() {
 };
 
 pkg_dist_tarballs_all() {
-	if [ "${ARG_TARBALL:-0}" -eq 1 ]; then
+	if [ -n "${ARG_TARBALL}" ]; then
 		log_msg info "Building distribution tarballs...";
 		case "${TARBALL_SUFFIX}" in
 		bz2)	if [ -n "$(which pbzip2 2>/dev/null)" ]; then