diff --git a/captcha.module b/captcha.module
index 945651d..9d85742 100644
--- a/captcha.module
+++ b/captcha.module
@@ -594,7 +594,18 @@ function captcha_validate_case_insensitive_ignore_spaces($solution, $response) {
  *     if the values could not be found, e.g. for a fresh form).
  */
 function _captcha_get_posted_captcha_info($element, $form_state, $this_form_id) {
-  if ($form_state['submitted'] && isset($form_state['captcha_info'])) {
+  //Handle Ajax scenarios
+  if (!empty($form_state['rebuild_info'])) {
+    if (!empty($form_state['captcha_info']['posted_form_id'])) {
+      $posted_form_id = $form_state['captcha_info']['posted_form_id'];
+    }
+    else {
+      $posted_form_id = $form_state['input']['form_id'];
+    }
+
+    $posted_captcha_sid = $form_state['captcha_info']['captcha_sid'];
+  }
+  else if ($form_state['submitted'] && isset($form_state['captcha_info'])) {
     // We are handling (or rebuilding) an already submitted form,
     // so we already determined the posted form ID and CAPTCHA session ID
     // for this form (from before submitting). Reuse this info.