diff --git a/coreapi/linphonecore.c b/coreapi/linphonecore.c
index 6a83183da..07beaf135 100644
--- a/coreapi/linphonecore.c
+++ b/coreapi/linphonecore.c
@@ -1529,7 +1529,7 @@ static void linphone_core_init(LinphoneCore * lc, const LinphoneCoreVTable *vtab
 	const char *aac_fmtp162248, *aac_fmtp3244;
 	LinphoneCoreVTable* local_vtable= linphone_core_v_table_new();
 	ms_message("Initializing LinphoneCore %s", linphone_core_get_version());
-	memset (lc, 0, sizeof (LinphoneCore));
+
 	lc->config=lp_config_ref(config);
 	lc->data=userdata;
 	lc->ringstream_autorelease=TRUE;
@@ -1679,7 +1679,7 @@ LinphoneCore *linphone_core_new(const LinphoneCoreVTable *vtable,
 
 LinphoneCore *linphone_core_new_with_config(const LinphoneCoreVTable *vtable, struct _LpConfig *config, void *userdata)
 {
-	LinphoneCore *core = ms_new(LinphoneCore, 1);
+	LinphoneCore *core = ms_new0(LinphoneCore, 1);
 	linphone_core_init(core, vtable, config, userdata);
 	return core;
 }
@@ -6640,7 +6640,7 @@ typedef struct Hook{
 }Hook;
 
 static Hook *hook_new(LinphoneCoreIterateHook hook, void *hook_data){
-	Hook *h=ms_new(Hook,1);
+	Hook *h=ms_new0(Hook,1);
 	h->fun=hook;
 	h->data=hook_data;
 	return h;
diff --git a/coreapi/upnp.c b/coreapi/upnp.c
index 83ab387c4..68b82e2ed 100644
--- a/coreapi/upnp.c
+++ b/coreapi/upnp.c
@@ -145,7 +145,7 @@ char * linphone_upnp_format_device_id(const char *device_id) {
 	if(device_id == NULL) {
 		return ret;
 	}
-	ret = ms_new(char, UPNP_UUID_LEN + 1);
+	ret = ms_new0(char, UPNP_UUID_LEN + 1);
 	tmp = ret;
 	if(linphone_upnp_strncmpi(device_id, "uuid:", linphone_upnp_str_min(device_id, "uuid:")) == 0) {
 		device_id += strlen("uuid:");
diff --git a/mediastreamer2 b/mediastreamer2
index 26ff7a209..dfc2fbd36 160000
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 26ff7a2098d0140083e23682752e66cf53f8e203
+Subproject commit dfc2fbd36db97f07f08112ee8217477ba4257744
diff --git a/oRTP b/oRTP
index 5333d998c..7508c59d7 160000
--- a/oRTP
+++ b/oRTP
@@ -1 +1 @@
-Subproject commit 5333d998c8eaf3c43e66c4a5335c0606c8dea3df
+Subproject commit 7508c59d703b769d510321ff357d10139d476bab