diff --git a/scripts/test/Muon/utilities/muon_workspace_wrapper_test.py b/scripts/test/Muon/utilities/muon_workspace_wrapper_test.py
index cd774f35eccf05af81c41ef2da7cd2ef5669c771..4caf644dad5dba9d77624a2ebc0ce5e4bf8e3de2 100644
--- a/scripts/test/Muon/utilities/muon_workspace_wrapper_test.py
+++ b/scripts/test/Muon/utilities/muon_workspace_wrapper_test.py
@@ -195,24 +195,18 @@ class MuonWorkspaceTest(unittest.TestCase):
         with self.assertRaises(ValueError):
             workspace_handle.name = "new_name"
 
-    def test_that_hiding_workspace_more_than_once_has_no_effect_but_raises_RuntimeWarning(self):
+    def test_that_hiding_workspace_more_than_once_has_no_effect(self):
         workspace_handle = MuonWorkspaceWrapper(workspace=self.workspace)
         workspace_handle.show("name1")
 
         workspace_handle.hide()
 
-        with self.assertRaises(RuntimeWarning):
-            workspace_handle.hide()
-
-    def test_that_if_workspace_deleted_from_ADS_then_hide_raises_a_RuntimeWarning(self):
+    def test_that_if_workspace_deleted_from_ADS_then_hide_does_nothing(self):
         workspace_handle = MuonWorkspaceWrapper(workspace=self.workspace)
         workspace_handle.show("name1")
 
         simpleapi.mtd.clear()
 
-        with self.assertRaises(RuntimeWarning):
-            workspace_handle.hide()
-
     def test_that_hiding_workspace_deletes_groups_which_are_left_empty(self):
         # TODO
         pass