diff --git a/kcms/mouse/backends/x11/x11_libinput_dummydevice.cpp b/kcms/mouse/backends/x11/x11_libinput_dummydevice.cpp
--- a/kcms/mouse/backends/x11/x11_libinput_dummydevice.cpp
+++ b/kcms/mouse/backends/x11/x11_libinput_dummydevice.cpp
@@ -86,7 +86,17 @@
         _data = nullptr;
 
 
-        if (type_return != XA_INTEGER || !data || format_return != 8 || num_items_return != 1) {
+        if (type_return != XA_INTEGER || !data || format_return != 8) {
+            return;
+        }
+        if (num_items_return != 1) {
+            Atom accel = XInternAtom(dpy, LIBINPUT_PROP_ACCEL_PROFILE_ENABLED, True);
+            if (num_items_return == 2 && valAtom == accel) {
+                unsigned char sendVal[2] = { 0 };
+                sendVal[val ? 1 : 0] = 1;
+                XIChangeProperty(dpy, deviceid, valAtom, XA_INTEGER,
+                                 8, XIPropModeReplace, sendVal, 2);
+            }
             return;
         }