diff --git a/napalm_procurve/procurve.py b/napalm_procurve/procurve.py
index d20f25d..69a1a90 100644
--- a/napalm_procurve/procurve.py
+++ b/napalm_procurve/procurve.py
@@ -80,7 +80,12 @@ class ProcurveDriver(ConfigLifecycleMixin, SwitchDriver):
     VENDOR = "HPE"
     DRIVER_NAME = "procurve"
     SNMP_OBJECT_ID_PREFIX = "1.3.6.1.4.1.11"
-    OUI_PREFIXES = ["3C:D9:2B", "3C:52:82", "00:80:9F", "44:31:92", "00:17:A4", "EC:B5:FA"]
+    OUI_PREFIXES = [
+        "3C:D9:2B",  # Hewlett Packard — IEEE
+        "3C:52:82",  # Hewlett Packard — IEEE
+        "44:31:92",  # Hewlett Packard — IEEE
+        "00:17:A4",  # Hewlett Packard — IEEE
+    ]
     SSH_FINGERPRINT = [
         FingerprintRule("hp", weight=5.0),
         FingerprintRule("aruba", weight=4.0),