diff --git a/infra/specs/client.webrtc.perf.json b/infra/specs/client.webrtc.perf.json
index be4d952..3357bf2 100644
--- a/infra/specs/client.webrtc.perf.json
+++ b/infra/specs/client.webrtc.perf.json
@@ -557,7 +557,6 @@
     "isolated_scripts": [
       {
         "args": [
-          "--isolated-script-test-perf-output=${ISOLATED_OUTDIR}/perftest-output.pb",
           "--nologs"
         ],
         "isolate_name": "fuchsia_perf_tests",
diff --git a/infra/specs/waterfalls.pyl b/infra/specs/waterfalls.pyl
index ead659c..f064fba 100644
--- a/infra/specs/waterfalls.pyl
+++ b/infra/specs/waterfalls.pyl
@@ -334,7 +334,7 @@
         'os_type':
         'linux',
         'mixins': [
-          'linux-bionic', 'x86-64', 'perf-pool-vm', 'timeout-3h', 'perf-output',
+          'linux-bionic', 'x86-64', 'perf-pool-vm', 'timeout-3h',
           'has_native_resultdb_integration', 'chromium-tester-service-account'
         ],
         'test_suites': {