diff --git mollom.module mollom.module
index 64f1959..5b5e763 100644
--- mollom.module
+++ mollom.module
@@ -2058,7 +2058,7 @@ function mollom_get_captcha($type, array $data = array()) {
     case 'image':
       $response = mollom('mollom.getImageCaptcha', $data);
       if ($response) {
-        $captcha = theme('image', array('path' => url($response['url']), 'alt' => t('Type the characters you see in this picture.'), 'getsize' => FALSE));
+        $captcha = theme('image', array('path' => url($response['url']), 'alt' => t('Type the characters you see in this picture.'), 'getsize' => FALSE, 'attributes' => array()));
         $output = '<span class="mollom-captcha-content mollom-image-captcha">' . $captcha . '</span>';
         $output .= ' (<a href="#" class="mollom-switch-captcha mollom-audio-captcha">' . t('verify using audio') . '</a>)';
       }