diff --git a/lib/Analytics/Consumer/Fornax.php b/lib/Analytics/Consumer/Fornax.php
index 1aafff7..e93ea1b 100644
--- a/lib/Analytics/Consumer/Fornax.php
+++ b/lib/Analytics/Consumer/Fornax.php
@@ -59,6 +59,17 @@ public function track($user_id, $event, $properties, $context, $timestamp) {
       $event = 'MissingDomain.' . ltrim($event, '.');
     }
 
+    if (!is_array($properties)) {
+      // if a non-array was passed, create an array out of it
+      if (!empty($properties)) {
+        $properties = array(
+          'message' => $properties
+        );
+      } else {
+        $properties = array();
+      }
+    }
+
     if (isset($this->options['defaultProperties'])) {
       $properties = array_merge($properties, $this->options['defaultProperties']);
     }