diff --git a/templates/install_ruby.sh.erb b/templates/install_ruby.sh.erb
index 258e948..94f8057 100644
--- a/templates/install_ruby.sh.erb
+++ b/templates/install_ruby.sh.erb
@@ -3,5 +3,5 @@ set -euo pipefail
 
 if [ ! -e '<%= @mastodon_home %>/.rbenv/versions/<%= @ruby_version %>/bin/ruby' ]; then
     cd '<%= @mastodon_home %>'
-    sudo -u <%= @mastodon_user %> RUBY_CONFIGURE_OPTS=--with-jemalloc ./.rbenv/bin/rbenv install '<%= @ruby_version %>'
+    sudo -u <%= @mastodon_user %> RUBY_CONFIGURE_OPTS=--with-jemalloc '<%= @mastodon_home %>/.rbenv/bin/rbenv' install '<%= @ruby_version %>'
 fi