diff --git a/src/util/virsocketaddr.c b/src/util/virsocketaddr.c
index 34f2af31b2e7d6f03daaec98034f61a06ff0f319..81539b3730d4577510290ecbe61bc98b3a753466 100644
--- a/src/util/virsocketaddr.c
+++ b/src/util/virsocketaddr.c
@@ -505,6 +505,8 @@ virSocketAddrBroadcast(const virSocketAddr *addr,
                        const virSocketAddr *netmask,
                        virSocketAddrPtr broadcast)
 {
+    memset(broadcast, 0, sizeof(*broadcast));
+
     if ((addr->data.stor.ss_family != AF_INET) ||
         (netmask->data.stor.ss_family != AF_INET)) {
         broadcast->data.stor.ss_family = AF_UNSPEC;