diff --git a/src/NoCaptcha.php b/src/NoCaptcha.php
index 6463847..0c2eafd 100644
--- a/src/NoCaptcha.php
+++ b/src/NoCaptcha.php
@@ -29,6 +29,11 @@ class NoCaptcha
      */
     protected $http;
 
+    /**
+     * API requested control
+     */
+    protected $api_requested = false;
+
     /**
      * NoCaptcha.
      *
@@ -53,7 +58,11 @@ public function display($attributes = [], $lang = null)
     {
         $attributes['data-sitekey'] = $this->sitekey;
 
-        $html = '<script src="'.$this->getJsLink($lang).'" async defer></script>'."\n";
+        $html = '';
+        if (empty($this->api_requested)) {
+            $this->api_requested = true;
+            $html .= '<script src="'.$this->getJsLink($lang).'" async defer></script>'."\n";
+        }
         $html .= '<div class="g-recaptcha"'.$this->buildAttributes($attributes).'></div>';
 
         return $html;
diff --git a/src/NoCaptchaServiceProvider.php b/src/NoCaptchaServiceProvider.php
index 3886a2d..9933434 100644
--- a/src/NoCaptchaServiceProvider.php
+++ b/src/NoCaptchaServiceProvider.php
@@ -52,7 +52,7 @@ protected function bootConfig()
      */
     public function register()
     {
-        $this->app->bind('captcha', function ($app) {
+        $this->app->singleton('captcha', function ($app) {
             return new NoCaptcha(
                 $app['config']['captcha.secret'],
                 $app['config']['captcha.sitekey']