diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1626,6 +1626,7 @@
     'PHUIFormIconSetControl' => 'view/form/control/PHUIFormIconSetControl.php',
     'PHUIFormInsetView' => 'view/form/PHUIFormInsetView.php',
     'PHUIFormLayoutView' => 'view/form/PHUIFormLayoutView.php',
+    'PHUIFormNumberControl' => 'view/form/control/PHUIFormNumberControl.php',
     'PHUIHandleListView' => 'applications/phid/view/PHUIHandleListView.php',
     'PHUIHandleTagListView' => 'applications/phid/view/PHUIHandleTagListView.php',
     'PHUIHandleView' => 'applications/phid/view/PHUIHandleView.php',
@@ -6185,6 +6186,7 @@
     'PHUIFormIconSetControl' => 'AphrontFormControl',
     'PHUIFormInsetView' => 'AphrontView',
     'PHUIFormLayoutView' => 'AphrontView',
+    'PHUIFormNumberControl' => 'AphrontFormControl',
     'PHUIHandleListView' => 'AphrontTagView',
     'PHUIHandleTagListView' => 'AphrontTagView',
     'PHUIHandleView' => 'AphrontView',
diff --git a/src/applications/auth/factor/PhabricatorTOTPAuthFactor.php b/src/applications/auth/factor/PhabricatorTOTPAuthFactor.php
--- a/src/applications/auth/factor/PhabricatorTOTPAuthFactor.php
+++ b/src/applications/auth/factor/PhabricatorTOTPAuthFactor.php
@@ -132,7 +132,7 @@
         'the authenticator correctly:'));
 
     $form->appendChild(
-      id(new AphrontFormTextControl())
+      id(new PHUIFormNumberControl())
         ->setLabel(pht('TOTP Code'))
         ->setName('totpcode')
         ->setValue($code)
diff --git a/src/view/form/control/PHUIFormNumberControl.php b/src/view/form/control/PHUIFormNumberControl.php
new file mode 100644
--- /dev/null
+++ b/src/view/form/control/PHUIFormNumberControl.php
@@ -0,0 +1,22 @@
+<?php
+
+final class PHUIFormNumberControl extends AphrontFormControl {
+
+  protected function getCustomControlClass() {
+    return 'phui-form-number';
+  }
+
+  protected function renderInput() {
+    return javelin_tag(
+      'input',
+      array(
+        'type' => 'text',
+        'pattern' => '\d*',
+        'name' => $this->getName(),
+        'value' => $this->getValue(),
+        'disabled' => $this->getDisabled() ? 'disabled' : null,
+        'id' => $this->getID(),
+      ));
+  }
+
+}