diff --git a/lam/docs/README.lamdaemon.txt b/lam/docs/README.lamdaemon.txt
index 91e18904..7488a5b0 100644
--- a/lam/docs/README.lamdaemon.txt
+++ b/lam/docs/README.lamdaemon.txt
@@ -37,6 +37,7 @@
    perl -MCPAN -e shell
    install Quota
    install Net::SSH::Perl
+   install Math::BigInt::GMP
 
    If your Perl executable is not located in /usr/bin/perl you will have to edit
    the path in the first line of lamdaemon.pl.