diff --git a/Note/ClipEditViewController.swift b/Note/ClipEditViewController.swift
index 4b74086..c07547f 100644
--- a/Note/ClipEditViewController.swift
+++ b/Note/ClipEditViewController.swift
@@ -39,7 +39,7 @@ class ClipEditViewController: UIViewController {
     private func setupNavigationBar() {
         let saveButton = UIBarButtonItem(
             title: "保存",
-            style: .done,
+            style: .prominent,
             target: self,
             action: #selector(didTapSaveButton)
         )
@@ -85,8 +85,9 @@ class ClipEditViewController: UIViewController {
         Task {
             do {
                 try await ClipStore.shared.update(updatedClip)
-                await MainActor.run {
+                _ = await MainActor.run {
                     self.navigationController?.popViewController(animated: true)
+                    return ()
                 }
             } catch {
                 await MainActor.run {
diff --git a/Note/TextFormatter.swift b/Note/TextFormatter.swift
index 5d4f9b4..f65561e 100644
--- a/Note/TextFormatter.swift
+++ b/Note/TextFormatter.swift
@@ -38,7 +38,7 @@ enum TextFormatter {
         return content
     }
 
-    static func formatForShortcut(_ text: String) -> String {
+    static nonisolated func formatForShortcut(_ text: String) -> String {
         var content = text
         content = content.replacingOccurrences(of: " ", with: "")
         content = content.replacingOccurrences(of: "　", with: "")