diff --git a/tests/controller/test_project.py b/tests/controller/test_project.py
index deb61b16..77f8e799 100644
--- a/tests/controller/test_project.py
+++ b/tests/controller/test_project.py
@@ -75,7 +75,8 @@ def test_json(tmpdir):
         "show_grid": False,
         "show_interface_labels": False,
         "show_layers": False,
-        "snap_to_grid": False
+        "snap_to_grid": False,
+        "grid_size": 0,
     }
 
 
diff --git a/tests/controller/test_topology.py b/tests/controller/test_topology.py
index 01dbf245..b5d4b12f 100644
--- a/tests/controller/test_topology.py
+++ b/tests/controller/test_topology.py
@@ -45,6 +45,7 @@ def test_project_to_topology_empty(tmpdir):
         "show_interface_labels": False,
         "show_layers": False,
         "snap_to_grid": False,
+        "grid_size": 0,
         "topology": {
             "nodes": [],
             "links": [],