diff --git a/modules/desktop_capture/linux/x11/screen_capturer_x11.cc b/modules/desktop_capture/linux/x11/screen_capturer_x11.cc
index 4b7cbf54cb..d5dcd7af86 100644
--- a/modules/desktop_capture/linux/x11/screen_capturer_x11.cc
+++ b/modules/desktop_capture/linux/x11/screen_capturer_x11.cc
@@ -185,6 +185,10 @@ void ScreenCapturerX11::InitXrandr() {
 
 RTC_NO_SANITIZE("cfi-icall")
 void ScreenCapturerX11::UpdateMonitors() {
+  // The queue should be reset whenever |selected_monitor_rect_| changes, so
+  // that the DCHECKs in CaptureScreen() are satisfied.
+  queue_.Reset();
+
   if (monitors_) {
     free_monitors_(monitors_);
     monitors_ = nullptr;