diff --git a/tools_webrtc/ios/tests/perf_tests.json b/tools_webrtc/ios/tests/perf_tests.json
index bc6f0b9277..b871173c96 100644
--- a/tools_webrtc/ios/tests/perf_tests.json
+++ b/tools_webrtc/ios/tests/perf_tests.json
@@ -2,6 +2,9 @@
   "tests": [
     {
       "app": "webrtc_perf_tests",
+      "test args": [
+        "--save_chartjson_result"
+      ],
       "bot_id": "build15-a7",
       "pool": "WebRTC"
     }