--- a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp	2022-09-26 22:21:03.490717791 +0200
+++ b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp	2022-09-26 22:26:57.351308403 +0200
@@ -359,17 +359,17 @@ void QXcbConnection::xi2SelectDeviceEven
     if (window == rootWindow())
         return;
 
-    uint32_t mask = 0;
+    uint8_t mask[8] = {};
 
     if (isAtLeastXI22()) {
-        mask |= XCB_INPUT_XI_EVENT_MASK_TOUCH_BEGIN;
-        mask |= XCB_INPUT_XI_EVENT_MASK_TOUCH_UPDATE;
-        mask |= XCB_INPUT_XI_EVENT_MASK_TOUCH_END;
+        setXcbMask(mask, XCB_INPUT_TOUCH_BEGIN);
+        setXcbMask(mask, XCB_INPUT_TOUCH_UPDATE);
+        setXcbMask(mask, XCB_INPUT_TOUCH_END);
 
         qt_xcb_input_event_mask_t xiMask;
         xiMask.header.deviceid = XCB_INPUT_DEVICE_ALL_MASTER;
         xiMask.header.mask_len = 1;
-        xiMask.mask = mask;
+        memcpy(xiMask.mask, mask, sizeof(xiMask.mask));
 
         xcb_void_cookie_t cookie =
                 xcb_input_xi_select_events_checked(xcb_connection(), window, 1, &xiMask.header);
@@ -382,9 +382,10 @@ void QXcbConnection::xi2SelectDeviceEven
         }
     }
 
-    mask = XCB_INPUT_XI_EVENT_MASK_BUTTON_PRESS;
-    mask |= XCB_INPUT_XI_EVENT_MASK_BUTTON_RELEASE;
-    mask |= XCB_INPUT_XI_EVENT_MASK_MOTION;
+    memset(mask, 0, sizeof(mask));
+    setXcbMask(mask, XCB_INPUT_BUTTON_PRESS);
+    setXcbMask(mask, XCB_INPUT_BUTTON_RELEASE);
+    setXcbMask(mask, XCB_INPUT_MOTION);
 
 #if QT_CONFIG(tabletevent)
     QSet<int> tabletDevices;
@@ -396,7 +397,7 @@ void QXcbConnection::xi2SelectDeviceEven
             tabletDevices.insert(deviceId);
             xiEventMask[i].header.deviceid = deviceId;
             xiEventMask[i].header.mask_len = 1;
-            xiEventMask[i].mask = mask;
+            memcpy(xiEventMask[i].mask, mask, sizeof(xiEventMask[i].mask));
         }
         xcb_input_xi_select_events(xcb_connection(), window, nrTablets, &(xiEventMask.data()->header));
     }
@@ -412,7 +413,7 @@ void QXcbConnection::xi2SelectDeviceEven
 #endif
             xiEventMask[i].header.deviceid = scrollingDevice.deviceId;
             xiEventMask[i].header.mask_len = 1;
-            xiEventMask[i].mask = mask;
+            memcpy(xiEventMask[i].mask, mask, sizeof(xiEventMask[i].mask));
             i++;
         }
         xcb_input_xi_select_events(xcb_connection(), window, i, &(xiEventMask.data()->header));