diff --git a/background.js b/background.js
index 6f0b05587..5cacc39fe 100644
--- a/background.js
+++ b/background.js
@@ -37,12 +37,7 @@ function cropImage(newArea, dataUrl) {
 
 async function takeScreenshot(cropRect) {
 	const activeTab = await getActiveTab();
-
-	const isFirefox = typeof InstallTrigger !== 'undefined';
-
-	// Chrome/blink do not incorporate automatically the devicePixelRatio so we need to do it manually
-	const zoom = await browser.tabs.getZoom(activeTab.id)
-		* (isFirefox ? 1 : window.devicePixelRatio);
+	const zoom = await browser.tabs.getZoom(activeTab.id) *  window.devicePixelRatio;
 
 	const newArea = Object.assign({}, cropRect);
 	newArea.x *= zoom;