diff --git a/integration/restart_test.go b/integration/restart_test.go
index 16ac5c8b6..f738cc402 100644
--- a/integration/restart_test.go
+++ b/integration/restart_test.go
@@ -25,7 +25,6 @@ import (
 	"time"
 
 	"github.com/containerd/containerd"
-	"github.com/containerd/containerd/errdefs"
 	"github.com/containerd/containerd/integration/images"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -143,25 +142,12 @@ func TestContainerdRestart(t *testing.T) {
 			require.NoError(t, err)
 
 			err = task.Kill(ctx, syscall.SIGKILL, containerd.WithKillAll)
-			if goruntime.GOOS != "windows" {
-				// NOTE: CRI-plugin setups watcher for each container and
-				// cleanups container when the watcher returns exit event.
-				// We just need to kill that sandbox and wait for exit
-				// event from waitCh. If the sandbox container exits,
-				// the state of sandbox must be NOT_READY.
-				require.NoError(t, err)
-			} else {
-				// NOTE(gabriel-samfira): On Windows, the "notready-sandbox" array
-				// only has a container in the ContainerState_CONTAINER_CREATED
-				// state and a container in the ContainerState_CONTAINER_EXITED state.
-				// Sending a Kill() to a task that has already exited, or to a task that
-				// was never started (which is the case here), will always return an
-				// ErrorNotFound (at least on Windows). Given that in this sanbox, there
-				// will never be a running task, after we recover from a containerd restart
-				// we can expect an ErrorNotFound here every time.
-				// The waitCh channel should already be closed at this point.
-				assert.True(t, errdefs.IsNotFound(err), err)
-			}
+			// NOTE: CRI-plugin setups watcher for each container and
+			// cleanups container when the watcher returns exit event.
+			// We just need to kill that sandbox and wait for exit
+			// event from waitCh. If the sandbox container exits,
+			// the state of sandbox must be NOT_READY.
+			require.NoError(t, err)
 
 			select {
 			case <-waitCh: