diff --git a/src/composables/useQrCode.js b/src/composables/useQrCode.js
index 53a5137..6996b61 100644
--- a/src/composables/useQrCode.js
+++ b/src/composables/useQrCode.js
@@ -2,6 +2,7 @@ import { ref, nextTick } from 'vue'
 import QRCode from 'qrcode'
 
 const BASE_QR_SIZE = 256
+const QR_MARGIN = 1
 const MAX_WIDTH_RATIO = 0.8
 const MIN_SCALE = 0.5
 const SCALE_STEP = 0.1
@@ -40,7 +41,7 @@ export function useQrCode() {
     if (!canvas || !userText) return
 
     const width = Math.round(BASE_QR_SIZE * scale.value)
-    await QRCode.toCanvas(canvas, userText, { width })
+    await QRCode.toCanvas(canvas, userText, { width, margin: QR_MARGIN })
     qrDataUrl.value = canvas.toDataURL('image/png')
   }