diff --git a/lib/LDAP.php b/lib/LDAP.php
index 5b546629..49faf705 100644
--- a/lib/LDAP.php
+++ b/lib/LDAP.php
@@ -261,6 +261,12 @@ public function isResource($resource) {
 		if ($resource instanceof \LDAP\Connection) {
 			return true;
 		}
+		if ($resource instanceof \LDAP\Result) {
+			return true;
+		}
+		if ($resource instanceof \LDAP\ResultEntry) {
+			return true;
+		}
 		return \is_resource($resource);
 	}