diff --git a/src/wifi/model/edca-txop-n.cc b/src/wifi/model/edca-txop-n.cc
index ae8e15901..fe6c4ffb9 100644
--- a/src/wifi/model/edca-txop-n.cc
+++ b/src/wifi/model/edca-txop-n.cc
@@ -1038,7 +1038,7 @@ EdcaTxopN::GetTxopFragmentOffset (uint32_t fragmentNumber) const
   uint32_t offset;
   uint32_t fragmentSize = GetTxopFragmentSize ();
   uint32_t nFragments = (m_currentPacket->GetSize () / fragmentSize);
- if ((m_currentPacket->GetSize () % fragmentSize) > 0)
+  if ((m_currentPacket->GetSize () % fragmentSize) > 0)
     {
       nFragments++;
     }
@@ -1090,7 +1090,7 @@ EdcaTxopN::GetFragmentSize (void) const
 
 uint32_t
 EdcaTxopN::GetNextFragmentSize (void) const
- {
+{
   uint32_t size;
   if (IsTxopFragmentation ())
     {
diff --git a/src/wifi/model/edca-txop-n.h b/src/wifi/model/edca-txop-n.h
index c3d782085..934b3f238 100644
--- a/src/wifi/model/edca-txop-n.h
+++ b/src/wifi/model/edca-txop-n.h
@@ -463,7 +463,7 @@ private:
    *         false otherwise.
    */
   bool HasTxop (void) const;
-  
+
   /**
    * Calculate the size of the next fragment.
    *
@@ -489,7 +489,7 @@ private:
    *         false otherwise.
    */
   bool IsLastFragment (void) const;
-  
+
   /**
    * Check if the current packet is fragmented because of an exceeded TXOP duration.
    *
diff --git a/src/wifi/model/mac-low.h b/src/wifi/model/mac-low.h
index b97540426..d252e63cc 100644
--- a/src/wifi/model/mac-low.h
+++ b/src/wifi/model/mac-low.h
@@ -453,7 +453,7 @@ public:
   Time CalculateOverallTxTime (Ptr<const Packet> packet,
                                const WifiMacHeader* hdr,
                                const MacLowTransmissionParameters &params) const;
-    
+
   Time CalculateOverallTxFragmentTime (Ptr<const Packet> packet,
                                        const WifiMacHeader* hdr,
                                        const MacLowTransmissionParameters& params,