diff --git a/config/zfs-build.m4 b/config/zfs-build.m4
index e4197dc1424e..5f36569fe25b 100644
--- a/config/zfs-build.m4
+++ b/config/zfs-build.m4
@@ -626,6 +626,7 @@ AC_DEFUN([ZFS_AC_DEFAULT_PACKAGE], [
 		ubuntu)     bashcompletiondir=/usr/share/bash-completion/completions   ;;
 		debian)     bashcompletiondir=/usr/share/bash-completion/completions   ;;
 		freebsd)    bashcompletiondir=$sysconfdir/bash_completion.d;;
+		gentoo)     bashcompletiondir=/usr/share/bash-completion/completions   ;;
 		*)          bashcompletiondir=/etc/bash_completion.d   ;;
 	esac
 	AC_MSG_RESULT([$bashcompletiondir])