diff --git a/testing/awsy/awsy/test_base_memory_usage.py b/testing/awsy/awsy/test_base_memory_usage.py
index 8ef9934a6876..56cb19efe416 100644
--- a/testing/awsy/awsy/test_base_memory_usage.py
+++ b/testing/awsy/awsy/test_base_memory_usage.py
@@ -47,6 +47,9 @@ class TestMemoryUsage(AwsyTestCase):
     def perf_checkpoints(self):
         return CHECKPOINTS
 
+    def perf_extra_opts(self):
+        return self._extra_opts
+
     def setUp(self):
         AwsyTestCase.setUp(self)
         self.logger.info("setting up!")
@@ -64,6 +67,11 @@ class TestMemoryUsage(AwsyTestCase):
         self._pages_to_load = process_count
         self._urls = ["about:blank"] * process_count
 
+        if self.marionette.get_pref("fission.autostart"):
+            self._extra_opts = ["fission"]
+        else:
+            self._extra_opts = None
+
         self.logger.info(
             "areweslimyet run by %d pages, "
             "%d iterations, %d perTabPause, %d settleWaitTime, "