diff --git a/tests/test_backoffice_pages.py b/tests/test_backoffice_pages.py
index 24dea21de..7326e3c13 100644
--- a/tests/test_backoffice_pages.py
+++ b/tests/test_backoffice_pages.py
@@ -2714,7 +2714,10 @@ def test_backoffice_wscall_error_email(http_requests, pub, emails):
     assert 'Error during webservice call' in resp.text
 
     # check email box
-    error_email = emails.get('[ERROR] [WSCALL] ValueError: No JSON object could be decoded')
+    if six.PY2:
+        error_email = emails.get('[ERROR] [WSCALL] ValueError: No JSON object could be decoded')
+    else:
+        error_email = emails.get('[ERROR] [WSCALL] json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)')
     assert '/form-title/%s/' % number31.id in error_email['payload']
     assert error_email['msg']['References']