diff --git a/lib/rubygems/installer.rb b/lib/rubygems/installer.rb
index 3882330b53..c9d87c5617 100644
--- a/lib/rubygems/installer.rb
+++ b/lib/rubygems/installer.rb
@@ -704,8 +704,7 @@ class Gem::Installer
     return if self.class.path_warning
 
     user_bin_dir = @bin_dir || Gem.bindir(gem_home)
-    user_bin_dir = user_bin_dir.tr(File::ALT_SEPARATOR, File::SEPARATOR) if
-      File::ALT_SEPARATOR
+    user_bin_dir = user_bin_dir.tr(File::ALT_SEPARATOR, File::SEPARATOR) if File::ALT_SEPARATOR
 
     path = ENV['PATH']
     if Gem.win_platform?