diff --git a/QuickBooks/HTTP.php b/QuickBooks/HTTP.php
index da76ece0..54e67ea4 100644
--- a/QuickBooks/HTTP.php
+++ b/QuickBooks/HTTP.php
@@ -479,7 +479,7 @@ protected function _requestCurl($method, &$errnum, &$errmsg)
 		}
 
 		$query = '';
-		if (count($this->_get))
+		if (isset($this->_get) && count($this->_get))
 		{
 			$query = '?' . http_build_query($this->_get);
 		}