diff --git a/lib/commonBindings.js b/lib/commonBindings.js
index 0d0a224f..c2521f37 100644
--- a/lib/commonBindings.js
+++ b/lib/commonBindings.js
@@ -50,9 +50,11 @@ let context = {
  * @return {String}                 String identifier of the attribute type.
  */
 function guessType(attribute, device) {
-    for (let i = 0; i < device.active.length; i++) {
-        if (device.active[i].name === attribute) {
-            return device.active[i].type;
+    if (device.active) {
+        for (let i = 0; i < device.active.length; i++) {
+            if (device.active[i].name === attribute) {
+                return device.active[i].type;
+            }
         }
     }