diff --git a/lib/libregex/tests/libregex_test.sh b/lib/libregex/tests/libregex_test.sh
index 8ebe9b64ab63..071f407cdb10 100755
--- a/lib/libregex/tests/libregex_test.sh
+++ b/lib/libregex/tests/libregex_test.sh
@@ -29,6 +29,10 @@ check()
 {
 	local dataname="${1}"; shift
 
+	if [ "${dataname}" == "gnuext" ]; then
+		atf_expect_fail "GNU extensions are not currently implemented"
+	fi
+
 	prog="$(atf_get_srcdir)/h_regex"
 	data="$(atf_get_srcdir)/data/${dataname}.in"