diff --git a/src/hlua.c b/src/hlua.c
index 7df8778..cbc0fde 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -2035,6 +2035,8 @@
 
 	sess->accept_date = date; /* user-visible date for logging */
 	sess->tv_accept   = now;  /* corrected date for internal use */
+	memset(sess->stkctr, 0, sizeof(sess->stkctr));
+
 	socket->s = pool_alloc2(pool2_stream);
 	if (!socket->s) {
 		hlua_pusherror(L, "socket: out of memory");
diff --git a/src/peers.c b/src/peers.c
index df4ecf8..57954d7 100644
--- a/src/peers.c
+++ b/src/peers.c
@@ -1127,6 +1127,7 @@
 	sess->fe = p;
 	sess->accept_date = date; /* user-visible date for logging */
 	sess->tv_accept = now;  /* corrected date for internal use */
+	memset(sess->stkctr, 0, sizeof(sess->stkctr));
 
 	if ((s = pool_alloc2(pool2_stream)) == NULL) { /* disable this proxy for a while */
 		Alert("out of memory in peer_session_create().\n");
diff --git a/src/stream.c b/src/stream.c
index 6730ad4..e21a2a5 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -107,6 +107,7 @@
 	sess->origin = &cli_conn->obj_type;
 	sess->accept_date = date; /* user-visible date for logging */
 	sess->tv_accept   = now;  /* corrected date for internal use */
+	memset(sess->stkctr, 0, sizeof(sess->stkctr));
 
 	if (unlikely((s = pool_alloc2(pool2_stream)) == NULL))
 		goto out_free_sess;