diff --git modules/image/image.module modules/image/image.module
index dab8836..619b19a 100644
--- modules/image/image.module
+++ modules/image/image.module
@@ -1054,6 +1054,13 @@ function image_style_url($style_name, $path) {
     $file_url .= (strpos($file_url, '?') !== FALSE ? '&' : '?') . drupal_http_build_query($token_query);
   }

+// Create derivated image if it doesn't exist.
+  if (!file_exists($file_url) && !file_exists($uri)) {
+    if (file_exists($path)) {
+      $current_style = image_style_load($style_name);
+      image_style_create_derivative($current_style, $path, $uri);
+    }
+  }
   return $file_url;
 }