--- a/Screenkey/xlib.py
+++ b/Screenkey/xlib.py
@@ -6,7 +6,7 @@
 from ctypes import *
 
 ## base X11
-libX11 = CDLL('libX11.so.6')
+libX11 = CDLL('@libX11@/lib/libX11.so.6')
 
 # types
 Atom = c_ulong
@@ -278,7 +278,7 @@
 
 
 ## record extensions
-libXtst = CDLL('libXtst.so.6')
+libXtst = CDLL('@libXtst@/lib/libXtst.so.6')
 
 # types
 XPointer = String