diff --git a/timeout_unix.go b/timeout_unix.go
index 5844008..b07c51d 100644
--- a/timeout_unix.go
+++ b/timeout_unix.go
@@ -15,11 +15,19 @@ func (tio *Timeout) getCmd() *exec.Cmd {
 }
 
 func (tio *Timeout) terminate() error {
-	syssig, ok := tio.signal().(syscall.Signal)
+	sig := tio.signal()
+	syssig, ok := sig.(syscall.Signal)
 	if !ok || tio.Foreground {
-		return tio.Cmd.Process.Signal(tio.signal())
+		return tio.Cmd.Process.Signal(sig)
 	}
-	return syscall.Kill(-tio.Cmd.Process.Pid, syssig)
+	err := syscall.Kill(-tio.Cmd.Process.Pid, syssig)
+	if err != nil {
+		return err
+	}
+	if syssig != syscall.SIGKILL && syssig != syscall.SIGCONT {
+		return syscall.Kill(-tio.Cmd.Process.Pid, syscall.SIGCONT)
+	}
+	return nil
 }
 
 func (tio *Timeout) killall() error {
diff --git a/timeout_unix_test.go b/timeout_unix_test.go
new file mode 100644
index 0000000..b6470e2
--- /dev/null
+++ b/timeout_unix_test.go
@@ -0,0 +1,29 @@
+// +build !windows
+
+package timeout
+
+import (
+	"os/exec"
+	"syscall"
+	"testing"
+	"time"
+)
+
+func TestRunSimple_withStop(t *testing.T) {
+	tio := &Timeout{
+		Duration:  2 * time.Second,
+		KillAfter: 1 * time.Second,
+		Cmd:       exec.Command(shellcmd, shellflag, "sleep 10"),
+	}
+	ch, err := tio.RunCommand()
+	if err != nil {
+		t.Errorf("err should be nil but: %s", err)
+	}
+	tio.Cmd.Process.Signal(syscall.SIGSTOP)
+	st := <-ch
+
+	expect := 128 + 15
+	if st.Code != expect {
+		t.Errorf("exit code invalid. out: %d, expect: %d", st.Code, expect)
+	}
+}