diff --git a/test/sensor.js b/test/sensor.js
index 939e50f7e..d9d12d380 100644
--- a/test/sensor.js
+++ b/test/sensor.js
@@ -1192,8 +1192,8 @@ exports["Sensor - Digital"] = {
   },
 
   tearDown: function(done) {
-    this.clock.restore();
-    this.digitalRead.restore();
+    Board.purge();
+    restore(this);
     done();
   },