diff --git a/talk/media/sctp/sctpdataengine.cc b/talk/media/sctp/sctpdataengine.cc
index 88dade79f..4442878f8 100644
--- a/talk/media/sctp/sctpdataengine.cc
+++ b/talk/media/sctp/sctpdataengine.cc
@@ -379,7 +379,7 @@ bool SctpDataMediaChannel::OpenSctpSocket() {
   }
 
   // Disable MTU discovery
-  struct sctp_paddrparams params;
+  struct sctp_paddrparams params = {0};
   params.spp_assoc_id = 0;
   params.spp_flags = SPP_PMTUD_DISABLE;
   params.spp_pathmtu = kSctpMtu;