diff --git a/tests/wpt/meta/MANIFEST.json b/tests/wpt/meta/MANIFEST.json
index b1e4999ba54..17e1a43403e 100644
--- a/tests/wpt/meta/MANIFEST.json
+++ b/tests/wpt/meta/MANIFEST.json
@@ -490301,7 +490301,7 @@
         []
        ],
        "executorservo.py": [
-        "90251c1e4c6b6ffd150184005466aecdc76d180d",
+        "a0deac318d07dc802cff3e956ad254bb6b340587",
         []
        ],
        "executorservodriver.py": [
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorservo.py b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorservo.py
index 90251c1e4c6..a0deac318d0 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorservo.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorservo.py
@@ -69,10 +69,11 @@ class ServoExecutor(ProcessTestExecutor):
     def find_wpt_prefs(self):
         default_path = os.path.join("resources", "wpt-prefs.json")
         # The cwd is the servo repo for `./mach test-wpt`, but on WPT runners
-        # it is the virtual environment where the nightly is extracted. In the
-        # latter case, the cwd has the `servo` folder inside which we find the
+        # it is the WPT repo. The nightly tar is extracted inside the python
+        # virtual environment within the repo. This means that on WPT runners,
+        # the cwd has the `_venv/servo` directory inside which we find the
         # binary and the 'resources' directory.
-        for dir in [".", "./servo"]:
+        for dir in [".", "./_venv/servo"]:
             candidate = os.path.abspath(os.path.join(dir, default_path))
             if os.path.isfile(candidate):
                 return candidate