diff --git a/tests/legacy/system/test_edb.py b/tests/legacy/system/test_edb.py
index 275269aca4..c468d61ad0 100644
--- a/tests/legacy/system/test_edb.py
+++ b/tests/legacy/system/test_edb.py
@@ -173,6 +173,10 @@ def test_hfss_mesh_operations(self):
 
     def test_add_variables(self):
         """Add design and project variables."""
+        result, var_server = self.edbapp.add_design_variable("variable_no_description", "1mm")
+        assert result
+        assert var_server
+        assert self.edbapp.variables["variable_no_description"].description == ""
         result, var_server = self.edbapp.add_design_variable("my_variable", "1mm", description="var_1")
         assert result
         assert var_server