diff --git a/ext/bg/js/api.js b/ext/bg/js/api.js
index 9ae7c841..94a53e67 100644
--- a/ext/bg/js/api.js
+++ b/ext/bg/js/api.js
@@ -367,24 +367,6 @@ async function apiFindTab(timeout, checkUrl) {
 }
 
 async function apiFocusTab(tab) {
-    if (typeof chrome.windows === 'object' && chrome.windows !== null) {
-        const tabWindow = await new Promise((resolve) => {
-            chrome.windows.get(tab.windowId, {}, (tabWindow) => {
-                const e = chrome.runtime.lastError;
-                if (e) { reject(e); }
-                else { resolve(tabWindow); }
-            });
-        });
-        if (!tabWindow.focused) {
-            await new Promise((resolve, reject) => {
-                chrome.windows.update(tab.windowId, {focused: true}, () => {
-                    const e = chrome.runtime.lastError;
-                    if (e) { reject(e); }
-                    else { resolve(); }
-                });
-            });
-        }
-    }
     await new Promise((resolve, reject) => {
         chrome.tabs.update(tab.id, {active: true}, () => {
             const e = chrome.runtime.lastError;
@@ -392,4 +374,26 @@ async function apiFocusTab(tab) {
             else { resolve(); }
         });
     });
+
+    if (!(typeof chrome.windows === 'object' && chrome.windows !== null)) {
+        // Windows not supported (e.g. on Firefox mobile)
+        return;
+    }
+
+    const tabWindow = await new Promise((resolve) => {
+        chrome.windows.get(tab.windowId, {}, (tabWindow) => {
+            const e = chrome.runtime.lastError;
+            if (e) { reject(e); }
+            else { resolve(tabWindow); }
+        });
+    });
+    if (!tabWindow.focused) {
+        await new Promise((resolve, reject) => {
+            chrome.windows.update(tab.windowId, {focused: true}, () => {
+                const e = chrome.runtime.lastError;
+                if (e) { reject(e); }
+                else { resolve(); }
+            });
+        });
+    }
 }