diff --git a/lib/supervisor.js b/lib/supervisor.js
index <HASH>..<HASH> 100644
--- a/lib/supervisor.js
+++ b/lib/supervisor.js
@@ -26,7 +26,7 @@ function run(
     // Only print any results if we're ready - that is, nextResultToPrint
     // is no longer null. (BEGIN changes it from null to 0.)
     if (nextResultToPrint !== null) {
-      var result = results[String(nextResultToPrint)];
+      var result = results[nextResultToPrint];
 
       while (
         // If there are no more results to print, then we're done.
@@ -36,7 +36,7 @@ function run(
       ) {
         printResult(format, result);
         nextResultToPrint++;
-        result = results[String(nextResultToPrint)];
+        result = results[nextResultToPrint];
       }
     }
   }
Don't call String unnecessarily.