diff --git a/src/Curl/Curl.php b/src/Curl/Curl.php
index 48b6ae5..e9e2a78 100644
--- a/src/Curl/Curl.php
+++ b/src/Curl/Curl.php
@@ -121,7 +121,9 @@ public function verbose($on=TRUE) {
 	}
 
 	public function close() {
-		curl_close($this->curl);
+		if (is_resource($this->curl)) {
+			curl_close($this->curl);
+		}
 	}
 
 	public function _exec() {