diff --git a/applications/luci-app-wireguard/luasrc/view/wireguard.htm b/applications/luci-app-wireguard/luasrc/view/wireguard.htm
index 77804a46d6..9282e65d30 100644
--- a/applications/luci-app-wireguard/luasrc/view/wireguard.htm
+++ b/applications/luci-app-wireguard/luasrc/view/wireguard.htm
@@ -199,7 +199,7 @@ for ikey, iface in pairs(data) do
 -%>
 	<h3><%:Interface%> <%=ikey%></h3>
 	<div class="cbi-value" id="button" style="padding: 5px">
-		<input class="cbi-button cbi-button-apply" type="button" name="qrcode_<%=ikey%>" value="<%:Show/Hide QR-Code%>" onclick="toggle_qrcode(this)" />
+		<input class="btn cbi-button cbi-button-apply" type="button" name="qrcode_<%=ikey%>" value="<%:Show/Hide QR-Code%>" onclick="toggle_qrcode(this)" />
 	</div>
 <%-
 	local qr_enc