diff --git a/src/devices/wifi/mgt-headers.cc b/src/devices/wifi/mgt-headers.cc
index 13934cd3d..eccb71aa6 100644
--- a/src/devices/wifi/mgt-headers.cc
+++ b/src/devices/wifi/mgt-headers.cc
@@ -215,6 +215,7 @@ MgtProbeResponseHeader::Deserialize (Buffer::Iterator start)
 NS_OBJECT_ENSURE_REGISTERED (MgtAssocRequestHeader);
 
 MgtAssocRequestHeader::MgtAssocRequestHeader ()
+  : m_listenInterval (0)
 {}
 MgtAssocRequestHeader::~MgtAssocRequestHeader ()
 {}