diff --git a/changelog.d/6418.bugfix b/changelog.d/6418.bugfix
new file mode 100644
index 000000000000..a1f488d3a228
--- /dev/null
+++ b/changelog.d/6418.bugfix
@@ -0,0 +1 @@
+Fix phone home stats reporting.
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index 73e2c29d0679..883b3fb70b8c 100644
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -585,7 +585,7 @@ def profiled(*args, **kargs):
     def performance_stats_init():
         _stats_process.clear()
         _stats_process.append(
-            (int(hs.get_clock().time(), resource.getrusage(resource.RUSAGE_SELF)))
+            (int(hs.get_clock().time()), resource.getrusage(resource.RUSAGE_SELF))
         )
 
     def start_phone_stats_home():