diff --git a/platform/chromium/vapi-background.js b/platform/chromium/vapi-background.js
index 26a949ea4..2c4ca6715 100644
--- a/platform/chromium/vapi-background.js
+++ b/platform/chromium/vapi-background.js
@@ -327,7 +327,9 @@ vAPI.tabs.registerListeners = function() {
     };
 
     var onActivated = function(details) {
-        vAPI.contextMenu.onMustUpdate(details.tabId);
+        if ( vAPI.contextMenu instanceof Object ) {
+            vAPI.contextMenu.onMustUpdate(details.tabId);
+        }
     };
 
     var onUpdated = function(tabId, changeInfo, tab) {
@@ -628,7 +630,7 @@ vAPI.setIcon = (function() {
         tabId = toChromiumTabId(tabId);
         if ( tabId === 0 ) { return; }
 
-        if ( chrome.browserAction.setIcon instanceof Object ) {
+        if ( chrome.browserAction.setIcon !== undefined ) {
             chrome.browserAction.setIcon(
                 {
                     tabId: tabId,
@@ -648,7 +650,7 @@ vAPI.setIcon = (function() {
                     }
                 }
             );
-        } else if ( chrome.browserAction.setTitle instanceof Object ) {
+        } else if ( chrome.browserAction.setTitle !== undefined ) {
             chrome.browserAction.setTitle({
                 tabId: tabId,
                 title: titleTemplate.replace(
@@ -658,10 +660,19 @@ vAPI.setIcon = (function() {
             });
         }
 
-        vAPI.contextMenu.onMustUpdate(tabId);
+        if ( vAPI.contextMenu instanceof Object ) {
+            vAPI.contextMenu.onMustUpdate(tabId);
+        }
     };
 })();
 
+chrome.browserAction.onClicked.addListener(function(tab) {
+    vAPI.tabs.open({
+        select: true,
+        url: 'popup.html?tabId=' + tab.id + '&mobile=1'
+    });
+});
+
 /******************************************************************************/
 /******************************************************************************/
 
diff --git a/platform/webext/install.rdf b/platform/webext/install.rdf
index aaf1dc12a..b17945134 100644
--- a/platform/webext/install.rdf
+++ b/platform/webext/install.rdf
@@ -29,7 +29,7 @@
         <em:targetApplication>
             <Description>
                 <em:id>{{aa3c5121-dab2-40e2-81ca-7ea25febc110}}</em:id>
-                <em:minVersion>54.0</em:minVersion>
+                <em:minVersion>56.0</em:minVersion>
                 <em:maxVersion>*</em:maxVersion>
             </Description>
         </em:targetApplication>
diff --git a/src/js/contextmenu.js b/src/js/contextmenu.js
index ab2543555..54d939dee 100644
--- a/src/js/contextmenu.js
+++ b/src/js/contextmenu.js
@@ -27,12 +27,10 @@
 
 /******************************************************************************/
 
-var api = {
-    update: function() {}
-};
-
 if ( vAPI.contextMenu === undefined ) {
-    return api;
+    return {
+        update: function() {}
+    };
 }
 
 var µb = µBlock;
@@ -142,20 +140,20 @@ vAPI.contextMenu.onMustUpdate = update;
 
 /******************************************************************************/
 
-api.update = function(tabId) {
-    if ( µb.userSettings.contextMenuEnabled && tabId === undefined ) {
-        vAPI.tabs.get(null, function(tab) {
-            if ( tab ) {
-                update(tab.id);
-            }
-        });
-        return;
+return {
+    update: function(tabId) {
+        if ( µb.userSettings.contextMenuEnabled && tabId === undefined ) {
+            vAPI.tabs.get(null, function(tab) {
+                if ( tab ) {
+                    update(tab.id);
+                }
+            });
+            return;
+        }
+        update(tabId);
     }
-    update(tabId);
 };
 
-return api;
-
 /******************************************************************************/
 
 })();