diff --git a/src/background/infrastructures/content-message-listener.js b/src/background/infrastructures/content-message-listener.js
index beb52fe..aae07c0 100644
--- a/src/background/infrastructures/content-message-listener.js
+++ b/src/background/infrastructures/content-message-listener.js
@@ -16,6 +16,8 @@ export default class ContentMessageListener {
     this.linkController = new LinkController();
     this.backgroundOperationController = new OperationController();
     this.markController = new MarkController();
+
+    this.consolePorts = {};
   }
 
   run() {
@@ -38,6 +40,7 @@ export default class ContentMessageListener {
         });
       }
     });
+    browser.runtime.onConnect.addListener(this.onConnected.bind(this));
   }
 
   onMessage(message, sender) {
@@ -65,6 +68,8 @@ export default class ContentMessageListener {
       return this.onMarkSetGlobal(message.key, message.x, message.y);
     case messages.MARK_JUMP_GLOBAL:
       return this.onMarkJumpGlobal(message.key);
+    case messages.CONSOLE_FRAME_MESSAGE:
+      return this.onConsoleFrameMessage(sender.tab.id, message.message);
     }
   }
 
@@ -116,4 +121,21 @@ export default class ContentMessageListener {
   onMarkJumpGlobal(key) {
     return this.markController.jumpGlobal(key);
   }
+
+  onConsoleFrameMessage(tabId, message) {
+    let port = this.consolePorts[tabId];
+    if (!port) {
+      return;
+    }
+    port.postMessage(message);
+  }
+
+  onConnected(port) {
+    if (port.name !== 'vimvixen-console') {
+      return;
+    }
+
+    let id = port.sender.tab.id;
+    this.consolePorts[id] = port;
+  }
 }
diff --git a/src/console/index.jsx b/src/console/index.jsx
index c0d1807..dfd323e 100644
--- a/src/console/index.jsx
+++ b/src/console/index.jsx
@@ -38,6 +38,5 @@ const onMessage = (message) => {
 };
 
 browser.runtime.onMessage.addListener(onMessage);
-window.addEventListener('message', (event) => {
-  onMessage(JSON.parse(event.data));
-}, false);
+let port = browser.runtime.connect({ name: 'vimvixen-console' });
+port.onMessage.addListener(onMessage);
diff --git a/src/content/actions/find.js b/src/content/actions/find.js
index b3d7e30..e08d7e5 100644
--- a/src/content/actions/find.js
+++ b/src/content/actions/find.js
@@ -9,25 +9,6 @@ import messages from 'shared/messages';
 import actions from 'content/actions';
 import * as consoleFrames from '../console-frames';
 
-const postPatternNotFound = (pattern) => {
-  return consoleFrames.postError(
-    window.document,
-    'Pattern not found: ' + pattern);
-};
-
-const postPatternFound = (pattern) => {
-  return consoleFrames.postInfo(
-    window.document,
-    'Pattern found: ' + pattern,
-  );
-};
-
-const postNoPrevious = () => {
-  return consoleFrames.postError(
-    window.document,
-    'No previous search keywords');
-};
-
 const find = (string, backwards) => {
   let caseSensitive = false;
   let wrapScan = true;
@@ -60,13 +41,13 @@ const findNext = async(currentKeyword, reset, backwards) => {
     });
   }
   if (!keyword) {
-    return postNoPrevious();
+    return consoleFrames.postError('No previous search keywords');
   }
   let found = find(keyword, backwards);
   if (found) {
-    postPatternFound(keyword);
+    consoleFrames.postInfo('Pattern found: ' + keyword);
   } else {
-    postPatternNotFound(keyword);
+    consoleFrames.postError('Pattern not found: ' + keyword);
   }
 
   return {
diff --git a/src/content/actions/operation.js b/src/content/actions/operation.js
index 1aeb8be..b96c6b9 100644
--- a/src/content/actions/operation.js
+++ b/src/content/actions/operation.js
@@ -85,7 +85,7 @@ const exec = (operation, repeat, settings, addonEnabled) => {
     break;
   case operations.URLS_YANK:
     urls.yank(window);
-    consoleFrames.postInfo(window.document, 'Current url yanked');
+    consoleFrames.postInfo('Current url yanked');
     break;
   case operations.URLS_PASTE:
     urls.paste(
diff --git a/src/content/components/common/mark.js b/src/content/components/common/mark.js
index 1ed636b..0f838a9 100644
--- a/src/content/components/common/mark.js
+++ b/src/content/components/common/mark.js
@@ -33,7 +33,7 @@ export default class MarkComponent {
     }
 
     if (key.ctrlKey || key.metaKey || key.altKey) {
-      consoleFrames.postError(window.document, 'Unknown mark');
+      consoleFrames.postError('Unknown mark');
     } else if (globalKey(key.key) && markStage.setMode) {
       this.doSetGlobal(key);
     } else if (globalKey(key.key) && markStage.jumpMode) {
@@ -55,7 +55,7 @@ export default class MarkComponent {
 
   doJump(marks, key, smoothscroll) {
     if (!marks[key.key]) {
-      consoleFrames.postError(window.document, 'Mark is not set');
+      consoleFrames.postError('Mark is not set');
       return;
     }
 
diff --git a/src/content/console-frames.js b/src/content/console-frames.js
index 0c0ec02..401765c 100644
--- a/src/content/console-frames.js
+++ b/src/content/console-frames.js
@@ -16,22 +16,23 @@ const blur = (doc) => {
   iframe.blur();
 };
 
-const postMessage = (doc, message) => {
-  let iframe = doc.getElementById('vimvixen-console-frame');
-  iframe.contentWindow.postMessage(JSON.stringify(message), '*');
-};
-
-const postError = (doc, message) => {
-  return postMessage(doc, {
-    type: messages.CONSOLE_SHOW_ERROR,
-    text: message,
+const postError = (text) => {
+  browser.runtime.sendMessage({
+    type: messages.CONSOLE_FRAME_MESSAGE,
+    message: {
+      type: messages.CONSOLE_SHOW_ERROR,
+      text,
+    },
   });
 };
 
-const postInfo = (doc, message) => {
-  return postMessage(doc, {
-    type: messages.CONSOLE_SHOW_INFO,
-    text: message,
+const postInfo = (text) => {
+  browser.runtime.sendMessage({
+    type: messages.CONSOLE_FRAME_MESSAGE,
+    message: {
+      type: messages.CONSOLE_SHOW_INFO,
+      text,
+    },
   });
 };
 
diff --git a/src/shared/messages.js b/src/shared/messages.js
index dad2b7a..e86600e 100644
--- a/src/shared/messages.js
+++ b/src/shared/messages.js
@@ -63,6 +63,9 @@ export default {
   SETTINGS_CHANGED: 'settings.changed',
   SETTINGS_QUERY: 'settings.query',
 
+  WINDOW_TOP_MESSAGE: 'window.top.message',
+  CONSOLE_FRAME_MESSAGE: 'console.frame.message',
+
   onWebMessage,
   onBackgroundMessage,
   onMessage,