diff --git a/git-log-script b/git-log-script
index feca5e9b7..049d02ea1 100755
--- a/git-log-script
+++ b/git-log-script
@@ -1,2 +1,3 @@
 #!/bin/sh
+. git-sh-setup-script || die "Not a git archive"
 git-rev-list --pretty $(git-rev-parse --default HEAD "$@") | LESS=-S ${PAGER:-less}