diff --git a/usr.sbin/makefs/tests/makefs_zfs_tests.sh b/usr.sbin/makefs/tests/makefs_zfs_tests.sh
--- a/usr.sbin/makefs/tests/makefs_zfs_tests.sh
+++ b/usr.sbin/makefs/tests/makefs_zfs_tests.sh
@@ -952,7 +952,7 @@
 			    ${TEST_INPUTS_DIR}/$mode
 		fi
 		if [ $(($mode & 0001)) -eq 0 ]; then
-			atf_check -s not-exit:0 -e match:"Permission denied" \
+			atf_check -s not-exit:0 -e match:"[P|p]ermission denied" \
 			    su -m tests -c ${TEST_INPUTS_DIR}/$mode
 		fi
 	done