diff --git a/test/+wt/+test/FileSelector.m b/test/+wt/+test/FileSelector.m
index 64aa207..e6b0225 100644
--- a/test/+wt/+test/FileSelector.m
+++ b/test/+wt/+test/FileSelector.m
@@ -189,6 +189,10 @@ function testButtonLabel(testCase)
         % line.
         function testButton(testCase)
         
+            % Running in desktop mode?
+            testCase.assumeEqual(exist('desktop', 'file'), 6, 'Cannot find function ''desktop.m''.')
+            testCase.assumeTrue(desktop('-inuse'), 'MATLAB must run in desktop mode in order to complete current test.')
+
             % Get the button control
             buttonControl = testCase.Widget.ButtonControl;
 
diff --git a/test/+wt/+test/PasswordField.m b/test/+wt/+test/PasswordField.m
index a252852..f60345e 100644
--- a/test/+wt/+test/PasswordField.m
+++ b/test/+wt/+test/PasswordField.m
@@ -42,6 +42,10 @@ function testValue(testCase)
         
         function testTyping(testCase)
         
+            % Running in desktop mode?
+            testCase.assumeEqual(exist('desktop', 'file'), 6, 'Cannot find function ''desktop.m''.')
+            testCase.assumeTrue(desktop('-inuse'), 'MATLAB must run in desktop mode in order to complete current test.')
+            
             % Get the password field
             passField = testCase.Widget.PasswordControl;
             newValue = "AbC435!";