diff --git a/rdp-proxy/manager.py b/rdp-proxy/manager.py
index 78c8f02..36972aa 100644
--- a/rdp-proxy/manager.py
+++ b/rdp-proxy/manager.py
@@ -111,6 +111,10 @@ def _anti_idle_loop():
                     ["xdotool", "click", "--window", win_id, "1"],
                     env=env, capture_output=True, timeout=5,
                 )
+                subprocess.run(
+                    ["xdotool", "key", "--window", win_id, "--clearmodifiers", "shift"],
+                    env=env, capture_output=True, timeout=5,
+                )
                 toggle = not toggle
                 log.debug("anti_idle click window=%s pos=%s,%s", win_id, x, y)
             else: