diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 9dcc338ee94..850c618f20d 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -675404,7 +675404,7 @@
    "support"
   ],
   "tools/wptrunner/wptrunner/browsers/servodriver.py": [
-   "0a63a32c96699a441ce696bae6b8d32f4d69bc3d",
+   "75cee5abb68a67ebf624be28294a635ce5790cba",
    "support"
   ],
   "tools/wptrunner/wptrunner/browsers/webkit.py": [
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/servodriver.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/servodriver.py
index 0a63a32c966..75cee5abb68 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/servodriver.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/servodriver.py
@@ -166,9 +166,7 @@ class ServoWebDriverBrowser(Browser):
                                    command=" ".join(self.command))
 
     def is_alive(self):
-        if self.runner:
-            return self.runner.is_running()
-        return False
+        return self.proc.poll() is None
 
     def cleanup(self):
         self.stop()