diff --git a/test/functional/terminal/channel_spec.lua b/test/functional/terminal/channel_spec.lua
index 8a083330ae..1451528c45 100644
--- a/test/functional/terminal/channel_spec.lua
+++ b/test/functional/terminal/channel_spec.lua
@@ -140,7 +140,8 @@ it('chansend sends lines to terminal channel in proper order', function()
     -- On Windows this may fail if the shell hasn't fully started yet, so retry.
     t.retry(is_os('win') and 3 or 1, 5000, function()
       command([[call chansend(id, ['echo "hello"', 'echo "world"', ''])]])
-      screen:expect { any = [[echo "hello".*echo "world"]], timeout = 2000 }
+      -- With PowerShell the command may be highlighted, so specify attr_ids = {}.
+      screen:expect { any = [[echo "hello".*echo "world"]], attr_ids = {}, timeout = 2000 }
     end)
     command('bdelete!')
     screen:expect { any = '%[No Name%]' }