diff --git a/test/rubygems/installer_test_case.rb b/test/rubygems/installer_test_case.rb
index 705de6804ed193..dc978d06b0485b 100644
--- a/test/rubygems/installer_test_case.rb
+++ b/test/rubygems/installer_test_case.rb
@@ -111,7 +111,7 @@ def util_make_exec(spec = @spec, shebang = "#!/usr/bin/ruby", bindir = "bin")
 
   def setup_base_installer(force = true)
     @gem = setup_base_gem
-    util_installer @spec, @gemhome, false, force
+    util_installer @spec, @gemhome, force
   end
 
   ##
@@ -163,7 +163,7 @@ def setup_base_user_installer
 
     @user_gem = @user_spec.cache_file
 
-    util_installer @user_spec, Gem.user_dir, :user
+    Gem::Installer.at @user_gem, :user_install => true
   end
 
   ##
@@ -219,13 +219,11 @@ def util_setup_gem(ui = @ui, force = true)
   end
 
   ##
-  # Creates an installer for +spec+ that will install into +gem_home+.  If
-  # +user+ is true a user-install will be performed.
+  # Creates an installer for +spec+ that will install into +gem_home+.
 
-  def util_installer(spec, gem_home, user=false, force=true)
+  def util_installer(spec, gem_home, force=true)
     Gem::Installer.at(spec.cache_file,
                        :install_dir => gem_home,
-                       :user_install => user,
                        :force => force)
   end