diff --git a/src/core/parser.js b/src/core/parser.js
index 723e2ea3e..20dbd886d 100644
--- a/src/core/parser.js
+++ b/src/core/parser.js
@@ -67,7 +67,7 @@ class Parser {
   }
 
   shift() {
-    if (isCmd(this.buf2, 'ID')) {
+    if ((this.buf2 instanceof Cmd) && this.buf2.cmd === 'ID') {
       this.buf1 = this.buf2;
       this.buf2 = null;
     } else {
diff --git a/test/unit/api_spec.js b/test/unit/api_spec.js
index b32014e08..cac5fec01 100644
--- a/test/unit/api_spec.js
+++ b/test/unit/api_spec.js
@@ -1331,7 +1331,7 @@ describe('api', function() {
 
         let [statEntry] = stats.times;
         expect(statEntry.name).toEqual('Page Request');
-        expect(statEntry.end - statEntry.start).toBeGreaterThan(0);
+        expect(statEntry.end - statEntry.start).toBeGreaterThanOrEqual(0);
 
         loadingTask.destroy().then(done);
       }, done.fail);