diff --git a/src/workflow/ArcanistDiffWorkflow.php b/src/workflow/ArcanistDiffWorkflow.php
--- a/src/workflow/ArcanistDiffWorkflow.php
+++ b/src/workflow/ArcanistDiffWorkflow.php
@@ -218,10 +218,6 @@
         'help' =>
           'Attempt to convert non UTF-8 hunks into specified encoding.',
       ),
-      'allow-untracked' => array(
-        'help' =>
-          'Skip checks for untracked files in the working copy.',
-      ),
       'excuse' => array(
         'param' => 'excuse',
         'help' => 'Provide a prepared in advance excuse for any lints/tests'.
@@ -294,7 +290,7 @@
       'add-all' => array(
         'short' => 'a',
         'help' =>
-          'Automatically add all untracked, unstaged and uncommitted files to '.
+          'Automatically add all unstaged and uncommitted files to '.
           'the commit.',
       ),
       'json' => array(
diff --git a/src/workflow/ArcanistWorkflow.php b/src/workflow/ArcanistWorkflow.php
--- a/src/workflow/ArcanistWorkflow.php
+++ b/src/workflow/ArcanistWorkflow.php
@@ -809,10 +809,6 @@
     return $this->repositoryAPI;
   }
 
-  final protected function shouldRequireCleanUntrackedFiles() {
-    return empty($this->arguments['allow-untracked']);
-  }
-
   final public function setCommitMode($mode) {
     $this->commitMode = $mode;
     return $this;
@@ -875,13 +871,8 @@
     // We only want files which are purely uncommitted.
     $uncommitted = array_diff($uncommitted, $unstaged);
 
-    $untracked = $api->getUntrackedChanges();
-    if (!$this->shouldRequireCleanUntrackedFiles()) {
-      $untracked = array();
-    }
-
     $should_commit = false;
-    if ($untracked || $unstaged || $uncommitted) {
+    if ($unstaged || $uncommitted) {
 
       // NOTE: We're running this because it builds a cache and can take a
       // perceptible amount of time to arrive at an answer, but we don't want
@@ -894,28 +885,6 @@
 
       $lists = array();
 
-      if ($untracked) {
-        if ($api instanceof ArcanistGitAPI) {
-          $hint = pht(
-            '(To ignore these %s change(s), add them to ".git/info/exclude".)',
-            new PhutilNumber(count($untracked)));
-        } else if ($api instanceof ArcanistSubversionAPI) {
-          $hint = pht(
-            '(To ignore these %s change(s), add them to "svn:ignore".)',
-            new PhutilNumber(count($untracked)));
-        } else if ($api instanceof ArcanistMercurialAPI) {
-          $hint = pht(
-            '(To ignore these %s change(s), add them to ".hgignore".)',
-            new PhutilNumber(count($untracked)));
-        }
-
-        $untracked_list = "    ".implode("\n    ", $untracked);
-        $lists[] = pht(
-          "  Untracked changes in working copy:\n  %s\n%s",
-          $hint,
-          $untracked_list);
-      }
-
       if ($unstaged) {
         $unstaged_list = "    ".implode("\n    ", $unstaged);
         $lists[] = pht(
@@ -932,12 +901,8 @@
 
       echo implode("\n\n", $lists)."\n";
 
-      $all_uncommitted = array_merge($untracked, $unstaged, $uncommitted);
+      $all_uncommitted = array_merge($unstaged, $uncommitted);
       if ($this->askForAdd($all_uncommitted)) {
-        if ($untracked) {
-          $api->addToCommit($untracked);
-        }
-
         if ($unstaged) {
           $api->addToCommit($unstaged);
         }
@@ -952,20 +917,10 @@
           $api->stashChanges();
           $this->stashed = true;
         } else {
-          if ($untracked && !$unstaged && !$uncommitted) {
-            // Give a tailored message if there are only untracked files,
-            // because the advice to commit files does not make sense in
-            // Subversion.
-            throw new ArcanistUsageException(
-              pht(
-                'You can not continue with untracked changes. Add them, '.
-                'discard them, or mark them as ignored before proceeding.'));
-          } else {
-            throw new ArcanistUsageException(
-              pht(
-                'You can not continue with uncommitted changes. Commit '.
-                'or discard them before proceeding.'));
-          }
+          throw new ArcanistUsageException(
+            pht(
+              'You can not continue with uncommitted changes. Commit '.
+              'or discard them before proceeding.'));
         }
       }
     }
@@ -980,10 +935,6 @@
           "# ".pht('Enter a commit message.')."\n#\n".
           "# ".pht('Changes:')."\n#\n";
 
-        foreach ($untracked as $untracked_path) {
-          $template .= "#     ".$untracked_path." (".pht('Added').")\n";
-        }
-
         $paths = array_merge($uncommitted, $unstaged);
         $paths = array_unique($paths);
         sort($paths);