diff --git a/src/system/TimeSource.h b/src/system/TimeSource.h
index 4a5120332f167b..10ffb867e24211 100644
--- a/src/system/TimeSource.h
+++ b/src/system/TimeSource.h
@@ -63,7 +63,7 @@ template <>
 class TimeSource<Source::kSystem>
 {
 public:
-    uint64_t GetCurrentMonotonicTimeMs() { return System::Clock::GetMonotonicMicroseconds(); }
+    uint64_t GetCurrentMonotonicTimeMs() { return System::Clock::GetMonotonicMilliseconds(); }
 };
 
 /**