diff --git a/firefox-ios/Client/Frontend/Browser/BrowserPrompts.swift b/firefox-ios/Client/Frontend/Browser/BrowserPrompts.swift
index b964db093bf5..5d729f3f3702 100644
--- a/firefox-ios/Client/Frontend/Browser/BrowserPrompts.swift
+++ b/firefox-ios/Client/Frontend/Browser/BrowserPrompts.swift
@@ -40,16 +40,13 @@ protocol JSAlertInfo {
 struct MessageAlert: JSAlertInfo {
     let message: String
     let frame: WKFrameInfo
-    let completionHandler: (() -> Void)?
 
     func alertController() -> JSPromptAlertController {
         let alertController = JSPromptAlertController(
             title: titleForJavaScriptPanelInitiatedByFrame(frame),
             message: message,
             preferredStyle: .alert)
-        alertController.addAction(UIAlertAction(title: .OKString, style: .default) { _ in
-            completionHandler?()
-        })
+        alertController.addAction(UIAlertAction(title: .OKString, style: .default))
         alertController.alertInfo = self
         return alertController
     }
diff --git a/firefox-ios/Client/Frontend/Browser/BrowserViewController/Extensions/BrowserViewController+WebViewDelegates.swift b/firefox-ios/Client/Frontend/Browser/BrowserViewController/Extensions/BrowserViewController+WebViewDelegates.swift
index eed2dc6f8ed6..b7a59bfd28a1 100644
--- a/firefox-ios/Client/Frontend/Browser/BrowserViewController/Extensions/BrowserViewController+WebViewDelegates.swift
+++ b/firefox-ios/Client/Frontend/Browser/BrowserViewController/Extensions/BrowserViewController+WebViewDelegates.swift
@@ -57,14 +57,14 @@ extension BrowserViewController: WKUIDelegate {
         initiatedByFrame frame: WKFrameInfo,
         completionHandler: @escaping () -> Void
     ) {
-        let messageAlert = MessageAlert(message: message, frame: frame, completionHandler: {
-            completionHandler()
-            self.logger.log("Javascript message alert was completed.", level: .info, category: .webview)
-        })
+        let messageAlert = MessageAlert(message: message, frame: frame)
         if shouldDisplayJSAlertForWebView(webView) {
             logger.log("Javascript message alert will be presented.", level: .info, category: .webview)
 
-            present(messageAlert.alertController(), animated: true)
+            present(messageAlert.alertController(), animated: true) {
+                completionHandler()
+                self.logger.log("Javascript message alert was completed.", level: .info, category: .webview)
+            }
         } else if let promptingTab = tabManager[webView] {
             logger.log("Javascript message alert is queued.", level: .info, category: .webview)
 
@@ -964,7 +964,7 @@ private extension BrowserViewController {
 
     func shouldDisplayJSAlertForWebView(_ webView: WKWebView) -> Bool {
         // Only display a JS Alert if we are selected and there isn't anything being shown
-        return (tabManager.selectedTab == nil ? false : tabManager.selectedTab!.webView == webView)
+        return ((tabManager.selectedTab == nil ? false : tabManager.selectedTab!.webView == webView))
             && (self.presentedViewController == nil)
     }