diff --git a/lib/deploy.js b/lib/deploy.js
index 17e7e4a..bb787b9 100644
--- a/lib/deploy.js
+++ b/lib/deploy.js
@@ -128,7 +128,7 @@ function reportDeployResultDetails(details, logger, verbose) {
           logger.log('Test Successes:');
         }
         testSuccesses.forEach(function(s) {
-          logger.log(' - ' + (s.namespace ? s.namespace + '__' : '') + s.name + '.' + s.methodName);
+          logger.log(' - ' + (typeof s.namespace === 'string' ? s.namespace + '__' : '') + s.name + '.' + s.methodName);
         });
       }
       var testFailures = asArray(testResult.failures) || [];