diff --git a/src/tests/test_configverify.py b/src/tests/test_configverify.py
index e598679..bf48981 100644
--- a/src/tests/test_configverify.py
+++ b/src/tests/test_configverify.py
@@ -15,6 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from unittest import TestCase
+import json
 from vyos.configverify import verify_diffie_hellman_length
 from vyos.utils.process import cmd