diff --git a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
index af4ed8e6e6..84d00d0e09 100644
--- a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
@@ -336,10 +336,12 @@ XInput2TouchDeviceData *QXcbConnection::touchDeviceForId(int id)
 {
     XInput2TouchDeviceData *dev = m_touchDevices[id];
     if (!dev) {
-        int unused = 0;
+        int nrDevices = 0;
         QTouchDevice::Capabilities caps = 0;
         dev = new XInput2TouchDeviceData;
-        dev->xiDeviceInfo = XIQueryDevice(static_cast<Display *>(m_xlib_display), id, &unused);
+        dev->xiDeviceInfo = XIQueryDevice(static_cast<Display *>(m_xlib_display), id, &nrDevices);
+        if (nrDevices <= 0)
+            return 0;
         int type = -1;
         int maxTouchPoints = 1;
         bool hasRelativeCoords = false;