diff --git a/Mac/MainWindow/Detail/DetailWebViewController.swift b/Mac/MainWindow/Detail/DetailWebViewController.swift
index b1b364a51..a203600f5 100644
--- a/Mac/MainWindow/Detail/DetailWebViewController.swift
+++ b/Mac/MainWindow/Detail/DetailWebViewController.swift
@@ -105,9 +105,7 @@ final class DetailWebViewController: NSViewController, WKUIDelegate {
 
 		webInspectorEnabled = AppDefaults.webInspectorEnabled
 
-		NotificationCenter.default.addObserver(forName: .WebInspectorEnabledDidChange, object: nil, queue: OperationQueue.main) { (notification) in
-			self.webInspectorEnabled = notification.object! as! Bool
-		}
+		NotificationCenter.default.addObserver(self, selector: #selector(webInspectorEnabledDidChange(_:)), name: .WebInspectorEnabledDidChange, object: nil)
 
 		reloadHTML()
 	}
@@ -207,6 +205,10 @@ private extension DetailWebViewController {
 			callback(scrollInfo)
 		}
 	}
+
+	@objc func webInspectorEnabledDidChange(_ notification: Notification) {
+		self.webInspectorEnabled = notification.object! as! Bool
+	}
 }
 
 // MARK: - ScrollInfo