diff --git a/test/unit/logging.html b/test/unit/logging.html
index fbe484549e..0a37b9301e 100644
--- a/test/unit/logging.html
+++ b/test/unit/logging.html
@@ -78,6 +78,19 @@
       assert.deepEqual(fnEl.stream, [{level: 'log', args: ['fn']}, {level: 'warn', args: ['fn']}, {level: 'error', args: ['fn']}]);
       assert.deepEqual(classEl.stream, [{level: 'log', args: ['class']}, {level: 'warn', args: ['class']}, {level: 'error', args: ['class']}]);
     });
+    test('_log with single parameter', () => {
+      const msg = 'log test';
+      let logedMsg;
+      const orgConsole = console;      
+      window.console = {
+        log: msg => {
+          logedMsg = msg
+        }
+      };
+      Polymer.Base._log(msg);
+      window.console = orgConsole;
+      assert.equal(msg, logedMsg);
+    });
     test('_logf', () => {
       let args = ['hi', 'there'];
       let output = fnEl._logf(...args);
@@ -87,4 +100,4 @@
   });
   </script>
 </body>
-</html>
\ No newline at end of file
+</html>