diff -up plasma-desktop-5.18.4.1/kcms/touchpad/src/backends/x11/xlibbackend.cpp.syn plasma-desktop-5.18.4.1/kcms/touchpad/src/backends/x11/xlibbackend.cpp
--- plasma-desktop-5.18.4.1/kcms/touchpad/src/backends/x11/xlibbackend.cpp.syn	2020-03-31 09:24:01.000000000 -0500
+++ plasma-desktop-5.18.4.1/kcms/touchpad/src/backends/x11/xlibbackend.cpp	2020-05-03 13:20:06.830569831 -0500
@@ -42,7 +42,7 @@
 #include <X11/extensions/XInput.h>
 #include <X11/extensions/XInput2.h>
 
-#include <synaptics-properties.h>
+#include <xorg/synaptics-properties.h>
 #include <xserver-properties.h>
 
 struct DeviceListDeleter