diff --git a/src/bitrix24.php b/src/bitrix24.php
index e894535d..e7e95c71 100644
--- a/src/bitrix24.php
+++ b/src/bitrix24.php
@@ -876,11 +876,13 @@ public function isAccessTokenExpire()
 //		$url = 'https://'.self::OAUTH_SERVER.'/rest/app.info?auth='.$accessToken;
         $url = 'https://' . $domain . '/rest/app.info?auth=' . $accessToken;
         $requestResult = $this->executeRequest($url);
-        if (in_array($requestResult['error'], array('expired_token', 'invalid_token', 'WRONG_TOKEN'), false)) {
-            $isTokenExpire = true;
-        } else {
-            // handle other errors
-            $this->handleBitrix24APILevelErrors($requestResult, 'app.info');
+        if (isset($requestResult['error'])) {
+            if (in_array($requestResult['error'], array('expired_token', 'invalid_token', 'WRONG_TOKEN'), false)) {
+                $isTokenExpire = true;
+            } else {
+                // handle other errors
+                $this->handleBitrix24APILevelErrors($requestResult, 'app.info');
+            }
         }
         return $isTokenExpire;
     }// end of isTokenExpire
@@ -1008,4 +1010,4 @@ public function getRetriesToConnectTimeout()
     {
         return $this->retriesToConnectTimeout;
     }
-}
\ No newline at end of file
+}