diff --git a/workspace_tools/host_tests/wait_us_auto.py b/workspace_tools/host_tests/wait_us_auto.py
index 6bb10ced71..b17e3746c7 100644
--- a/workspace_tools/host_tests/wait_us_auto.py
+++ b/workspace_tools/host_tests/wait_us_auto.py
@@ -15,20 +15,17 @@ See the License for the specific language governing permissions and
 limitations under the License.
 """
 
-from host_test import Test, DefaultTest
+from host_test import DefaultTest
 from time import time
 from sys import stdout
 
 class WaitusTest(DefaultTest):
-    def print_result(self, result):
-       print "\n{%s}\n{end}" % result
-
     def run(self):
         test_result = True
         # First character to start test (to know after reset when test starts)
         self.mbed.serial.timeout = None
         c = self.mbed.serial.read(1)
-        if c == '$':    # target will printout TargetID e.g.: $$$$1040e649d5c09a09a3f6bc568adef61375c6
+        if c == '$': # target will printout TargetID e.g.: $$$$1040e649d5c09a09a3f6bc568adef61375c6
             #Read additional 39 bytes of TargetID
             self.mbed.serial.read(39)
             c = self.mbed.serial.read(1) # Re-read first 'tick'