--- a/taskcluster/taskgraph/test/test_try_option_syntax.py
+++ b/taskcluster/taskgraph/test/test_try_option_syntax.py
@@ -196,20 +196,20 @@ class TestTryOptionSyntax(unittest.TestC
     def test_u_platforms(self):
         "-u gtest[linux,win32] selects the linux and win32 platforms for gtest"
         tos = TryOptionSyntax('try: -u gtest[linux,win32]', graph_with_jobs)
         self.assertEqual(sorted(tos.unittests), sorted([
             {'test': 'gtest', 'platforms': ['linux', 'win32']},
         ]))
 
     def test_u_platforms_pretty(self):
-        "-u gtest[Ubuntu] selects the linux and linux64 platforms for gtest"
+        "-u gtest[Ubuntu] selects the linux, linux64 and linux64-asan platforms for gtest"
         tos = TryOptionSyntax('try: -u gtest[Ubuntu]', graph_with_jobs)
         self.assertEqual(sorted(tos.unittests), sorted([
-            {'test': 'gtest', 'platforms': ['linux', 'linux64']},
+            {'test': 'gtest', 'platforms': ['linux', 'linux64', 'linux64-asan']},
         ]))
 
     def test_u_platforms_negated(self):
         "-u gtest[-linux] selects all platforms but linux for gtest"
         tos = TryOptionSyntax('try: -u gtest[-linux]', graph_with_jobs)
         self.assertEqual(sorted(tos.unittests), sorted([
             {'test': 'gtest', 'platforms': ['linux64']},
         ]))

--- a/taskcluster/taskgraph/try_option_syntax.py
+++ b/taskcluster/taskgraph/try_option_syntax.py
@@ -119,17 +119,17 @@ UNITTEST_ALIASES = {
 }
 
 # unittest platforms can be specified by substring of the "pretty name", which
 # is basically the old Buildbot builder name.  This dict has {pretty name,
 # [test_platforms]} translations, This includes only the most commonly-used
 # substrings.  This is intended only for backward-compatibility.  New test
 # platforms should have their `test_platform` spelled out fully in try syntax.
 UNITTEST_PLATFORM_PRETTY_NAMES = {
-    'Ubuntu': ['linux', 'linux64'],
+    'Ubuntu': ['linux', 'linux64', 'linux64-asan'],
     'x64': ['linux64', 'linux64-asan'],
     # other commonly-used substrings for platforms not yet supported with
     # in-tree taskgraphs:
     # '10.10': [..TODO..],
     # '10.10.5': [..TODO..],
     # '10.6': [..TODO..],
     # '10.8': [..TODO..],
     # 'Android 2.3 API9': [..TODO..],