diff --git a/config.mk b/config.mk
index 7f35f71..ffe893f 100644
--- a/config.mk
+++ b/config.mk
@@ -4,11 +4,11 @@ VERSION = 0.9.1
 # Customize below to fit your system
 
 # paths
-PREFIX = /usr/local
+PREFIX = /usr
 MANPREFIX = $(PREFIX)/share/man
 
-X11INC = /usr/X11R6/include
-X11LIB = /usr/X11R6/lib
+X11INC = /usr/include/X11
+X11LIB = /usr/lib64
 
 PKG_CONFIG = pkg-config