diff --git a/code/unix/Makefile b/code/unix/Makefile
index a242852e..9ae73c8f 100644
--- a/code/unix/Makefile
+++ b/code/unix/Makefile
@@ -20,6 +20,9 @@
 PLATFORM=$(shell uname|tr A-Z a-z)
 PLATFORM_RELEASE=$(shell uname -r)
 ARCH:=$(shell uname -m | sed -e s/i.86/i386/)
+ifndef COPYDIR
+COPYDIR="/usr/local/games/quake3"
+endif
 
 ###
 ### These paths are where you probably want to change things
diff --git a/i_o-q3-readme b/i_o-q3-readme
index 14de20cb..2a404b06 100644
--- a/i_o-q3-readme
+++ b/i_o-q3-readme
@@ -24,6 +24,15 @@ Compiling
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 cd code/unix && make
 
+Installing under Linux
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+In code/unix edit the Makefile's COPYDIR variable to be where you installed
+quake 3 to. By default it will be set to /usr/local/games/quake3 if you
+haven't set it.
+
+Then run "make copyfiles", beware that this will overwrite any binaries
+installed previously, even id ones.
+
 Using shared libraries instead of qvm
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 To make quake3 prefer shared libraries instead of qvm run it with