diff --git a/gentoostrap.sh b/gentoostrap.sh
index dd20df3..b649ffa 100755
--- a/gentoostrap.sh
+++ b/gentoostrap.sh
@@ -110,12 +110,12 @@ build-gentoo() {
 	if ! [ -f "$stage3file" ]; then
 		log "Downloading stage3"
 		curl -s "$stage3" -o "$stage3file"
-	elif ! openssl dgst -r -sha512 "$stage3file"; then
+	elif ! grep -e "$(sha512sum "$stage3file" | awk '{print $1}')"; then
 		log "Checksum verification failed; downloading new stage3"
 		curl -s "$stage3" -o "$stage3file"
 	fi
 	# At this point, we should have a new stage3 that matches our signature; die of not
-	if ! openssl dgst -r -sha512 "$stage3file"; then
+	if ! grep -e "$(sha512sum "$stage3file" | awk '{print $1}')"; then
 		error "stage3 checksum verification failed" 50
 	fi
 	log "Decompressing tarball; this will prompt for root privileges"