diff --git a/coreapi/linphonecore.h b/coreapi/linphonecore.h
index 1a3bd2be3..1db2b29c0 100644
--- a/coreapi/linphonecore.h
+++ b/coreapi/linphonecore.h
@@ -218,7 +218,7 @@ LINPHONE_PUBLIC const char *linphone_error_info_get_details(const LinphoneErrorI
 LINPHONE_PUBLIC int linphone_error_info_get_protocol_code(const LinphoneErrorInfo *ei);
 
 /* linphone dictionary */
-LINPHONE_PUBLIC	LinphoneDictionary* linphone_dictionary_new();
+LINPHONE_PUBLIC	LinphoneDictionary* linphone_dictionary_new(void);
 LinphoneDictionary * linphone_dictionary_clone(const LinphoneDictionary* src);
 LinphoneDictionary * linphone_dictionary_ref(LinphoneDictionary* obj);
 void linphone_dictionary_unref(LinphoneDictionary* obj);
@@ -1980,7 +1980,7 @@ LINPHONE_PUBLIC	const char * linphone_core_get_stun_server(const LinphoneCore *l
  *
  * @return true if uPnP is available otherwise return false.
  */
-LINPHONE_PUBLIC bool_t linphone_core_upnp_available();
+LINPHONE_PUBLIC bool_t linphone_core_upnp_available(void);
 
 /**
  * @ingroup network_parameters
diff --git a/coreapi/linphonefriend.h b/coreapi/linphonefriend.h
index a38db19d0..891bf7631 100644
--- a/coreapi/linphonefriend.h
+++ b/coreapi/linphonefriend.h
@@ -119,7 +119,7 @@ typedef struct _LinphoneFriend LinphoneFriend;
  * Contructor
  * @return a new empty #LinphoneFriend
  */
-LINPHONE_PUBLIC LinphoneFriend * linphone_friend_new();
+LINPHONE_PUBLIC LinphoneFriend * linphone_friend_new(void);
 
 /**
  * Contructor same as linphone_friend_new() + linphone_friend_set_address()
diff --git a/coreapi/sipsetup.h b/coreapi/sipsetup.h
index dad51f13e..7b1b2ed44 100644
--- a/coreapi/sipsetup.h
+++ b/coreapi/sipsetup.h
@@ -117,7 +117,7 @@ typedef struct _SipSetup SipSetup;
 extern "C"{
 #endif
 
-BuddyInfo *buddy_info_new();
+BuddyInfo *buddy_info_new(void);
 void buddy_info_free(BuddyInfo *info);
 
 void buddy_lookup_request_set_key(BuddyLookupRequest *req, const char *key);
diff --git a/mediastreamer2 b/mediastreamer2
index b57c4697a..4a919b63a 160000
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit b57c4697a35b83267fe96b20734ea70fe3aa8896
+Subproject commit 4a919b63a6f4583d8dc464e32b542151359d264f
diff --git a/oRTP b/oRTP
index 9aae6334a..e56d11d0b 160000
--- a/oRTP
+++ b/oRTP
@@ -1 +1 @@
-Subproject commit 9aae6334aa4268954e32c7a3382e2dbc40b215d0
+Subproject commit e56d11d0b062ea96c8356513add39511b7cb4043