diff --git a/release-notes.sh b/release-notes.sh
index 9055fe7..e8294dd 100755
--- a/release-notes.sh
+++ b/release-notes.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 current="$(git describe --abbrev=0)"
-last="$(git describe HEAD~ --abbrev=0)"
+last="$(git describe $current~ --abbrev=0)"
 cat << EOF
 Changes:
 -