diff --git a/webform.module b/webform.module
index a0be5e2..89645b6 100644
--- a/webform.module
+++ b/webform.module
@@ -3591,6 +3591,11 @@ function theme_webform_element($variables) {
     }
   }
 
+  if (!empty($element['#description'])) {
+    $description_id = $element['#id'] . '--description';
+    $element['#children'] = str_replace('aria-describedby="--WEBFORM-PLACEHOLDER--"', 'aria-describedby="' . $description_id . '"', $element['#children']);
+  }
+
   switch ($element['#title_display']) {
     case 'inline':
     case 'before':
@@ -3612,7 +3617,7 @@ function theme_webform_element($variables) {
   }
 
   if (!empty($element['#description'])) {
-    $output .= ' <div class="description">' . $element['#description'] . "</div>\n";
+    $output .= ' <div id="' . $description_id . '" class="description">' . $element['#description'] . "</div>\n";
   }
 
   $output .= "</div>\n";
@@ -4690,6 +4695,9 @@ function _webform_component_classes(&$element, $component) {
     $element['#wrapper_attributes']['class'] = isset($element['#wrapper_attributes']['class']) ? $element['#wrapper_attributes']['class'] : array();
     $element['#wrapper_attributes']['class'] = array_merge($element['#wrapper_attributes']['class'], explode(' ' , $component['extra']['wrapper_classes']));
   }
+  if (!empty($element['#description'])) {
+    $element['#attributes']['aria-describedby'] = '--WEBFORM-PLACEHOLDER--';
+  }
 }
 
 /**