diff --git a/src/dsr/model/dsr-option-header.cc b/src/dsr/model/dsr-option-header.cc
index 8d2b6d778..f02f86ea7 100644
--- a/src/dsr/model/dsr-option-header.cc
+++ b/src/dsr/model/dsr-option-header.cc
@@ -277,7 +277,7 @@ DsrOptionRreqHeader::~DsrOptionRreqHeader ()
 void DsrOptionRreqHeader::SetNumberAddress (uint8_t n)
 {
   m_ipv4Address.clear ();
-  m_ipv4Address.assign (n, Ipv4Address (""));
+  m_ipv4Address.assign (n, Ipv4Address ());
 }
 
 Ipv4Address DsrOptionRreqHeader::GetTarget ()
@@ -425,7 +425,7 @@ DsrOptionRrepHeader::~DsrOptionRrepHeader ()
 void DsrOptionRrepHeader::SetNumberAddress (uint8_t n)
 {
   m_ipv4Address.clear ();
-  m_ipv4Address.assign (n, Ipv4Address (""));
+  m_ipv4Address.assign (n, Ipv4Address ());
 }
 
 void DsrOptionRrepHeader::SetNodesAddress (std::vector<Ipv4Address> ipv4Address)
@@ -568,7 +568,7 @@ uint8_t DsrOptionSRHeader::GetSalvage () const
 void DsrOptionSRHeader::SetNumberAddress (uint8_t n)
 {
   m_ipv4Address.clear ();
-  m_ipv4Address.assign (n, Ipv4Address (""));
+  m_ipv4Address.assign (n, Ipv4Address ());
 }
 
 void DsrOptionSRHeader::SetNodesAddress (std::vector<Ipv4Address> ipv4Address)