diff --git a/src/runtime/testdata/testprogcgo/notingo.go b/src/runtime/testdata/testprogcgo/notingo.go
index e5b1062e9e..6e78126358 100644
--- a/src/runtime/testdata/testprogcgo/notingo.go
+++ b/src/runtime/testdata/testprogcgo/notingo.go
@@ -14,8 +14,8 @@ package main
 
 extern void Ready();
 
-static int spinning;
-static int released;
+static _Atomic int spinning;
+static _Atomic int released;
 
 static void* enterGoThenSpinTwice(void* arg __attribute__ ((unused))) {
 	Ready();