diff --git a/installer/install.pl b/installer/install.pl
index 87d2a9291b..8f53d212a2 100755
--- a/installer/install.pl
+++ b/installer/install.pl
@@ -32,10 +32,15 @@ use C4::Installer;
 use C4::Installer::PerlModules;
 
 use Koha;
+use Koha::Caches;
 
 my $query = CGI->new;
 my $step  = $query->param('step');
 
+# Flush memcached before we begin
+Koha::Caches->get_instance('config')->flush_all;
+Koha::Caches->get_instance('sysprefs')->flush_all;
+
 my $language = $query->param('language');
 my ( $template, $loggedinuser, $cookie );