diff --git a/webform.module b/webform.module
index dae4cb7..a9aac51 100644
--- a/webform.module
+++ b/webform.module
@@ -1848,8 +1848,18 @@ function webform_node_view($node, $view_mode) {
     }
   }
 
-  // Render the form and generate the output.
-  $form = !empty($node->webform['components']) ? drupal_get_form('webform_client_form_' . $node->nid, $node, $submission, $is_draft) : '';
+  // Avoid building the same form twice on the same page request (which can
+  // happen if the webform is displayed in a panel or block) because this
+  // causes multistep forms to build incorrectly the second time.
+  $cached_forms = &drupal_static(__FUNCTION__, array());
+  if (isset($cached_forms[$node->nid])) {
+    $form = $cached_forms[$node->nid];
+  }
+  // If this is the first time, generate the form array.
+  else {
+    $form = drupal_get_form('webform_client_form_' . $node->nid, $node, $submission, $is_draft);
+    $cached_forms[$node->nid] = $form;
+  }
 
   // Remove the surrounding <form> tag if this is a preview.
   if (!empty($node->in_preview)) {