diff --git a/client/driver/raw_exec_test.go b/client/driver/raw_exec_test.go
index 42f6d47ae8fa..0acc7f9beb50 100644
--- a/client/driver/raw_exec_test.go
+++ b/client/driver/raw_exec_test.go
@@ -352,6 +352,16 @@ func TestRawExecDriver_Start_Kill_Wait_Cgroup(t *testing.T) {
 	if err := process.Signal(syscall.Signal(0)); err == nil {
 		t.Fatalf("process should not exist: %v", pid)
 	}
+
+	testutil.WaitForResult(func() (bool, error) {
+		if err := process.Signal(syscall.Signal(0)); err == nil {
+			return false, fmt.Errorf("process should not exist: %v", pid)
+		}
+
+		return true, nil
+	}, func(err error) {
+		t.Fatalf("err: %v", err)
+	})
 }
 
 func TestRawExecDriver_HandlerExec(t *testing.T) {