diff --git a/Makefile b/Makefile
index eddb224..ef5d274 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,3 @@
-PREFIX = /usr/local
-
 include config.mk
 
 OBJS = csto.o callisto.o lcl.o lenviron.o lextra.o lfs.o ljson.o\
diff --git a/config.mk b/config.mk
index 978913f..8182aea 100644
--- a/config.mk
+++ b/config.mk
@@ -1,7 +1,10 @@
+PREFIX = /usr/local
+MANPREFIX = ${PREFIX}/man
+
 CC       = cc
 CFLAGS   = -std=c99 -pedantic -fpic -O2 -Wall -Wextra -Wno-override-init -Iexternal/luasrc
 CPPFLAGS = -D_DEFAULT_SOURCE
-LDFLAGS = -lm
+LDFLAGS  = -lm
 
 # Enable readline
 #CPPFLAGS += -DLUA_USE_READLINE