diff --git a/src/traffic-control/model/pfifo-fast-queue-disc.cc b/src/traffic-control/model/pfifo-fast-queue-disc.cc
index 67b0d8e53..b2bbf9258 100644
--- a/src/traffic-control/model/pfifo-fast-queue-disc.cc
+++ b/src/traffic-control/model/pfifo-fast-queue-disc.cc
@@ -58,7 +58,7 @@ PfifoFastQueueDisc::~PfifoFastQueueDisc ()
   NS_LOG_FUNCTION (this);
 }
 
-constexpr int PfifoFastQueueDisc::prio2band[];
+const uint32_t PfifoFastQueueDisc::prio2band[16] = {1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1};
 
 bool
 PfifoFastQueueDisc::DoEnqueue (Ptr<QueueDiscItem> item)
@@ -81,12 +81,12 @@ PfifoFastQueueDisc::DoEnqueue (Ptr<QueueDiscItem> item)
 
   uint32_t band = prio2band[priority & 0x0f];
 
-  bool retval = GetInternalQueue(band)->Enqueue (item);
+  bool retval = GetInternalQueue (band)->Enqueue (item);
 
   // If Queue::Enqueue fails, QueueDisc::Drop is called by the internal queue
   // because QueueDisc::AddInternalQueue sets the drop callback
 
-  NS_LOG_LOGIC ("Number packets band " << band << ": " << GetInternalQueue(band)->GetNPackets ());
+  NS_LOG_LOGIC ("Number packets band " << band << ": " << GetInternalQueue (band)->GetNPackets ());
 
   return retval;
 }
diff --git a/src/traffic-control/model/pfifo-fast-queue-disc.h b/src/traffic-control/model/pfifo-fast-queue-disc.h
index 8a7ec3d86..7ebd3aabe 100644
--- a/src/traffic-control/model/pfifo-fast-queue-disc.h
+++ b/src/traffic-control/model/pfifo-fast-queue-disc.h
@@ -62,12 +62,12 @@ public:
 
   virtual ~PfifoFastQueueDisc();
 
+private:
   /**
    * Priority to band map
    */
-  static constexpr int prio2band[] = {1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1};
+  static const uint32_t prio2band[16];
 
-private:
   virtual bool DoEnqueue (Ptr<QueueDiscItem> item);
   virtual Ptr<QueueDiscItem> DoDequeue (void);
   virtual Ptr<const QueueDiscItem> DoPeek (void) const;