diff --git a/templates/install_ruby.sh.erb b/templates/install_ruby.sh.erb
index 3935c34..ca5dc2c 100644
--- a/templates/install_ruby.sh.erb
+++ b/templates/install_ruby.sh.erb
@@ -5,5 +5,5 @@ if [ ! -e '<%= @mastodon_home %>/.rbenv/versions/<%= @ruby_version %>/bin/ruby'
     cd '<%= @mastodon_home %>'
     sudo -u <%= @mastodon_user %> RUBY_CONFIGURE_OPTS=--with-jemalloc '<%= @mastodon_home %>/.rbenv/bin/rbenv' install '<%= @ruby_version %>'
     sudo -u <%= @mastodon_user %> '<%= @mastodon_home %>/.rbenv/bin/rbenv' global '<%= @ruby_version %>'
-    sudo -u <%= @mastodon_user %> '<%= @mastodon_home %>/.rbenv/versions/<%= @ruby_version %>/bin/gem install bundler --no-document
+    sudo -u <%= @mastodon_user %> '<%= @mastodon_home %>/.rbenv/versions/<%= @ruby_version %>/bin/gem' install bundler --no-document
 fi