--- a/taskcluster/taskgraph/try_option_syntax.py
+++ b/taskcluster/taskgraph/try_option_syntax.py
@@ -598,17 +598,17 @@ class TryOptionSyntax(object):
                 # they will schedule their builds even if they end up optimized away. This means
                 # to run these tasks on try, they'll need to be explicitly specified by -j until
                 # we find a better solution (see bug 1372510).
                 return False
             elif not self.jobs and attr('build_platform'):
                 if self.platforms is None or attr('build_platform') in self.platforms:
                     return True
                 return False
-            return True
+            return check_run_on_projects()
         elif attr('kind') == 'test':
             return match_test(self.unittests, 'unittest_try_name') \
                  or match_test(self.talos, 'talos_try_name')
         elif attr('kind') in BUILD_KINDS:
             if attr('build_type') not in self.build_types:
                 return False
             elif self.platforms is None:
                 # for "-p all", look for try in the 'run_on_projects' attribute