$ git diff
diff --git a/config.mk b/config.mk
index 07af883..559a5d0 100644
--- a/config.mk
+++ b/config.mk
@@ -7,8 +7,8 @@ VERSION = 1.0
 PREFIX = /usr/local
 MANPREFIX = $(PREFIX)/share/man

-X11INC = /usr/X11R6/include
-X11LIB = /usr/X11R6/lib
+X11INC = /usr/local/include
+X11LIB = /usr/local/lib

 # flags
 CPPFLAGS = -I$(X11INC) -D_DEFAULT_SOURCE -DVERSION=\"${VERSION}\"