diff --git a/lib/constants.py b/lib/constants.py
index a36882a..c6e14a4 100644
--- a/lib/constants.py
+++ b/lib/constants.py
@@ -349,6 +349,7 @@
 DEFAULT_CTS_TEST_XML_MAP = {
     'cheets_CTS_': 'test_result.xml',
     'cheets_GTS.': 'test_result.xml',
+    'cheets_GTS_': 'test_result.xml',
 }
 # Google Storage bucket URI to store results in.
 DEFAULT_CTS_RESULTS_GSURI = 'gs://chromeos-cts-results/'
diff --git a/lib/cts_helper_unittest.py b/lib/cts_helper_unittest.py
index 31c124b..12244d3 100644
--- a/lib/cts_helper_unittest.py
+++ b/lib/cts_helper_unittest.py
@@ -20,6 +20,7 @@
   def testIsCtsTest(self):
     self.assertTrue(cts_helper.isCtsTest('cheets_CTS_N.arm.all'))
     self.assertTrue(cts_helper.isCtsTest('cheets_CTS_N.x86.all'))
+    self.assertTrue(cts_helper.isCtsTest('cheets_GTS_N.all'))
     self.assertTrue(cts_helper.isCtsTest('cheets_GTS.all'))
     self.assertFalse(cts_helper.isCtsTest('cheets_GTS'))
     self.assertFalse(cts_helper.isCtsTest('cheets_CTS'))