diff --git a/src/devices/mesh/mesh-wifi-interface-mac.cc b/src/devices/mesh/mesh-wifi-interface-mac.cc
index e69119723..c0da82268 100644
--- a/src/devices/mesh/mesh-wifi-interface-mac.cc
+++ b/src/devices/mesh/mesh-wifi-interface-mac.cc
@@ -399,7 +399,7 @@ MeshWifiInterfaceMac::SendManagementFrame (Ptr<Packet> packet, const WifiMacHead
     }
   m_stats.sentFrames++;
   m_stats.sentBytes += packet->GetSize ();
-  if ((m_queues.find (AC_VO) == m_queues.end ()) || (m_queues.find (AC_VO) == m_queues.end ()))
+  if ((m_queues.find (AC_VO) == m_queues.end ()) || (m_queues.find (AC_BK) == m_queues.end ()))
     {
       NS_FATAL_ERROR ("Voice or Background queue is not set up!");
     }