diff --git a/tools/analytics/build-analytics b/tools/analytics/build-analytics
index 65f755cede..4271c8af29 100755
--- a/tools/analytics/build-analytics
+++ b/tools/analytics/build-analytics
@@ -1,5 +1,10 @@
 #!/usr/bin/env node
 
+// Usage:
+//
+// build analytics start|success|error|<exitCode> <actionCategory> <actionName>
+
+
 'use strict';
 
 
@@ -16,6 +21,11 @@ if (!analytics[actionCategory + 'Start']) {
   throw new Error('Unknown build-analytics actionCategory "' + actionCategory + '"');
 }
 
+var exitCode = Number.parseInt(eventType, 10);
+if (!Number.isNaN(exitCode)) {
+  eventType = (exitCode === 0) ? 'success' : 'error';
+}
+
 if (eventType != 'start' && eventType != 'success' && eventType != 'error') {
   throw new Error('Unknown build-analytics eventType "' + eventType + '"');
 }