diff --git a/taskcluster/taskgraph/try_option_syntax.py b/taskcluster/taskgraph/try_option_syntax.py
index b5988db981c0..4ea380eeef2b 100644
--- a/taskcluster/taskgraph/try_option_syntax.py
+++ b/taskcluster/taskgraph/try_option_syntax.py
@@ -525,7 +525,8 @@ class TryOptionSyntax(object):
         if attr('kind') in ('desktop-test', 'android-test'):
             return match_test(self.unittests, 'unittest_try_name')
         elif attr('kind') in JOB_KINDS:
-            if self.jobs is None:
+            # This will add 'job' tasks to the target set even if no try syntax was specified.
+            if not self.jobs:
                 return True
             if attr('build_platform') in self.jobs:
                 return True