diff --git a/scapy/arch/bpf/core.py b/scapy/arch/bpf/core.py
index 040067b15..e039df890 100644
--- a/scapy/arch/bpf/core.py
+++ b/scapy/arch/bpf/core.py
@@ -182,8 +182,8 @@ def get_working_ifaces():
             os.close(fd)
 
     # Sort to mimic pcap_findalldevs() order
-    interfaces.sort(lambda ifname_left_and_ifid_left,
-                        ifname_right_and_ifid_right: ifname_left_and_ifid_left[1]-ifname_right_and_ifid_right[1])
+    interfaces.sort(key=lambda elt: elt[1])
+
     return interfaces