diff --git a/tox.ini b/tox.ini
index 174a29769c..40fb174778 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,14 +9,14 @@ deps=
 setenv =
     PYTHONPATH = {toxinidir}
 commands =
-    pytest {posargs} armi
+    pytest --ignore=armi/utils/tests/test_gridGui.py {posargs} armi
 
 [testenv:cov]
 deps=
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/requirements-testing.txt
 commands =
-    pytest --cov-config=.coveragerc --cov=armi {posargs} armi
+    pytest --cov-config=.coveragerc --cov=armi --ignore=armi/utils/tests/test_gridGui.py {posargs} armi
 
 [testenv:lint]
 ignore_errors = true