diff --git a/captcha.php b/captcha.php
index db93f84..89a9959 100644
--- a/captcha.php
+++ b/captcha.php
@@ -16,7 +16,8 @@
         $phraseBuilder = new PhraseBuilder($CAPTCHA_LENGTH);
         $builder = new CaptchaBuilder(null, $phraseBuilder);
         $builder->setDistortion(1);
-        $builder->buildAgainstOCR(250, 40);
+        if (isset($SIMPLECAPTCHA) && $SIMPLECAPTCHA) $builder->build(250, 40);
+        else $builder->buildAgainstOCR(250, 40);
         $_SESSION['captcha'] = $builder->getPhrase();
         $builder->output();
 }else echo "huh?";