diff --git a/Library/Homebrew/system_command.rb b/Library/Homebrew/system_command.rb
index e1110c0ca5..eec820b073 100644
--- a/Library/Homebrew/system_command.rb
+++ b/Library/Homebrew/system_command.rb
@@ -190,7 +190,8 @@ class SystemCommand
                      *askpass_flags,
                      "-E", *env_args,
                      "--", "/usr/bin/sudo"]
-    elsif sudo_as_root?
+    end
+    if sudo_as_root?
       user_flags += ["-u", "root"]
     end
     ["/usr/bin/sudo", *user_flags, *askpass_flags, "-E", *env_args, "--"]