diff --git a/config.mk b/config.mk
index 069a6c2..5517c2d 100644
--- a/config.mk
+++ b/config.mk
@@ -7,8 +7,8 @@ VERSION = 0.9.2
 PREFIX = /usr/local
 MANPREFIX = $(PREFIX)/share/man
 
-X11INC = /usr/X11R6/include
-X11LIB = /usr/X11R6/lib
+X11INC = /usr/include/X11
+X11LIB = /usr/lib/X11
 
 PKG_CONFIG = pkg-config