diff --git a/src-main/index.js b/src-main/index.js
index c33b70f7..c6adf2bb 100644
--- a/src-main/index.js
+++ b/src-main/index.js
@@ -104,15 +104,6 @@ app.on('session-created', (session) => {
 });
 
 app.on('web-contents-created', (event, webContents) => {
-  webContents.on('will-navigate', (event, url) => {
-    // Only allow windows to refresh, not navigate anywhere.
-    const window = AbstractWindow.getWindowByWebContents(webContents);
-    if (!window || url !== window.initialURL) {
-      event.preventDefault();
-      openExternal(url);
-    }
-  });
-
   // Overwritten by AbstractWindow. We just set this here as a safety measure.
   webContents.setWindowOpenHandler((details) => ({
     action: 'deny'
diff --git a/src-main/windows/abstract.js b/src-main/windows/abstract.js
index bee12f91..dd2c1fab 100644
--- a/src-main/windows/abstract.js
+++ b/src-main/windows/abstract.js
@@ -21,6 +21,7 @@ class AbstractWindow {
     this.window = options.existingWindow || new BrowserWindow(this.getWindowOptions());
     this.window.webContents.setWindowOpenHandler(this.handleWindowOpen.bind(this));
     this.window.webContents.on('before-input-event', this.handleInput.bind(this));
+    this.window.webContents.on('will-navigate', this.handleWillNavigate.bind(this));
     this.applySettings();
 
     if (!options.existingWindow) {
@@ -286,6 +287,18 @@ class AbstractWindow {
     }
   }
 
+  /**
+   * @param {Electron.WillNavigateEvent} event 
+   * @param {string} url
+   */
+  handleWillNavigate (event, url) {
+    // Only allow windows to refresh, not navigate anywhere.
+    if (url !== this.initialURL) {
+      event.preventDefault();
+      openExternal(url);
+    }
+  }
+
   reload () {
     // Don't use webContents.reload() because it allows the page to navigate by using
     // history.pushState() then location.reload()