diff --git a/INSTALL b/INSTALL
index 24747579..6e0e6e77 100644
--- a/INSTALL
+++ b/INSTALL
@@ -7,7 +7,7 @@ You need the following installed:
   Perl
 
 Debian/Ubuntu users need:
-  libssl-dev libcrypt-openssl-rsa-perl libao2 libao-dev2 libio-socket-inet6-perl
+  libssl-dev libcrypt-openssl-rsa-perl libao2 libao-dev libio-socket-inet6-perl
 
 Perl modules (e.g. `perl -MCPAN -e 'install X'`):
   HTTP::Message