diff --git a/src/runtime/trace.go b/src/runtime/trace.go
index 139cbba6a9..7d47ae02a9 100644
--- a/src/runtime/trace.go
+++ b/src/runtime/trace.go
@@ -331,7 +331,7 @@ func StopTrace() {
 //
 // traceAdvanceSema must not be held.
 //
-// traceAdvance is called by golang.org/x/exp/trace using linkname.
+// traceAdvance is called by runtime/trace and golang.org/x/exp/trace using linkname.
 //
 //go:linkname traceAdvance
 func traceAdvance(stopTrace bool) {
diff --git a/src/runtime/tracetime.go b/src/runtime/tracetime.go
index 7ffab79bad..8be5c3d130 100644
--- a/src/runtime/tracetime.go
+++ b/src/runtime/tracetime.go
@@ -51,7 +51,7 @@ type traceTime uint64
 // nosplit because it's called from exitsyscall and various trace writing functions,
 // which are nosplit.
 //
-// traceClockNow is called by golang.org/x/exp/trace using linkname.
+// traceClockNow is called by runtime/trace and golang.org/x/exp/trace using linkname.
 //
 //go:linkname traceClockNow
 //go:nosplit