diff --git a/Trustly/Api/api.php b/Trustly/Api/api.php
index c9fee7d..1c1ea4e 100644
--- a/Trustly/Api/api.php
+++ b/Trustly/Api/api.php
@@ -315,7 +315,7 @@ public function post($url=NULL, $postdata=NULL) {
 		$body = curl_exec($curl);
 		if($body === FALSE) {
 			$error = curl_error($curl);
-			if($error === NULL) {
+			if(!$error) {
 				$error = 'Failed to connect to the Trusly API';
 			}
 			throw new Trustly_ConnectionException($error);