diff --git a/contrib/IXR/IXR_Library.php b/contrib/IXR/IXR_Library.php
index f71a486cb..1a6e3ebe3 100644
--- a/contrib/IXR/IXR_Library.php
+++ b/contrib/IXR/IXR_Library.php
@@ -417,7 +417,7 @@ EOD;
         $method = $this->callbacks[$methodname];
 
         // Perform the callback and send the response
-        if (count($args) == 1) {
+        if (is_array($args) && count($args) == 1) {
             // If only one paramater just send that instead of the whole array
             $args = $args[0];
         }