diff --git a/tests/Makefile.am b/tests/Makefile.am
index a4a5a200..7b573c10 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -14,13 +14,13 @@ dist_check_SCRIPTS = test-pass test-pass-cert test-cert test-iroute test-pass-sc
 	test-multi-cookie test-pam test-stress full-test test-group-pass test-pass-group-cert \
 	ocpasswd-test test-pass-group-cert-no-pass unix-test test-pass-opt-cert \
 	test-cookie-timeout test-cookie-timeout-2 radius-test test-explicit-ip \
-	radius-test test-gssapi
+	radius-test test-gssapi kerberos-test
 
 TESTS = test-pass test-pass-cert test-cert test-iroute test-pass-script \
 	test-multi-cookie full-test test-group-pass test-pass-group-cert \
 	ocpasswd-test test-pass-group-cert-no-pass unix-test test-pass-opt-cert \
 	test-cookie-timeout test-cookie-timeout-2 test-explicit-ip radius-test \
-	test-gssapi
+	test-gssapi kerberos-test
 
 TESTS_ENVIRONMENT = srcdir="$(srcdir)" \
 	top_builddir="$(top_builddir)"
diff --git a/tests/docker-common.sh b/tests/docker-common.sh
index 42929103..32c2470c 100755
--- a/tests/docker-common.sh
+++ b/tests/docker-common.sh
@@ -67,6 +67,12 @@ else #DEBIAN
 	cp $DOCKER_DIR/Dockerfile-debian-$CONFIG $DOCKER_DIR/Dockerfile
 fi
 
+if test ! -f $DOCKER_DIR/Dockerfile;then
+	echo "Cannot test in this system"
+	$UNLOCKFILE
+	exit 77
+fi
+
 rm -f $DOCKER_DIR/ocserv $DOCKER_DIR/ocpasswd $DOCKER_DIR/occtl
 cp ../src/ocserv ../src/ocpasswd ../src/occtl $DOCKER_DIR/