diff --git a/src/mesh/model/dot11s/peer-management-protocol-mac.cc b/src/mesh/model/dot11s/peer-management-protocol-mac.cc
index 74073f358..f4acc99ad 100644
--- a/src/mesh/model/dot11s/peer-management-protocol-mac.cc
+++ b/src/mesh/model/dot11s/peer-management-protocol-mac.cc
@@ -82,7 +82,7 @@ PeerManagementProtocolMac::Receive (Ptr<Packet> const_packet, const WifiMacHeade
       // Beacon shall not be dropped. May be needed to another plugins
       return true;
     }
-  uint16_t aid;
+  uint16_t aid = 0;  // applicable only in Confirm message
   IeConfiguration config;
   if (header.IsAction ())
     {