diff --git a/src/utils/tracked-controls.js b/src/utils/tracked-controls.js
index 383c84e3b85..242bcd958f2 100644
--- a/src/utils/tracked-controls.js
+++ b/src/utils/tracked-controls.js
@@ -99,14 +99,14 @@ function findMatchingController (controllers, filterIdExact, filterIdPrefix, fil
       var matches = false;
       for (var j = 0; j < filterIdPrefixes.length; j++) {
         var prefix = filterIdPrefixes[j];
-        if (prefix && controller.id.indexOf(prefix) === 0) {
+        if (prefix && !controller.id.indexOf(prefix)) {
           matches = true;
           break;
         }
       }
       if (!matches) { continue; }
     } else
-    if (filterIdPrefix && controller.id.indexOf(filterIdPrefix) !== 0) { continue; }
+    if (filterIdPrefix && controller.id.indexOf(filterIdPrefix)) { continue; }
     if (!filterIdPrefix && controller.id !== filterIdExact) { continue; }
 
     // If the hand filter and controller handedness are defined we compare them.