diff --git a/README.macos b/README.macos
index 6d3851503..9531aca95 100644
--- a/README.macos
+++ b/README.macos
@@ -30,5 +30,15 @@ Steps:
 * install to /opt/local
 	sudo make install 
 
+*********************
+Using gtk-osx (jhbuild environnment)
+
+After installing jhbuild and get gtk built,
+
+$ jhbuild shell
+
+$ PKG_CONFIG_PATH=/Users/smorlat/gtk/inst/lib/pkgconfig:/opt/local/lib/pkgconfig/ ./configure --disable-video --disable-gtk_ui --disable-strict
+
+
 
 
diff --git a/coreapi/sal_eXosip2_sdp.c b/coreapi/sal_eXosip2_sdp.c
index 70443c722..d6e671b86 100644
--- a/coreapi/sal_eXosip2_sdp.c
+++ b/coreapi/sal_eXosip2_sdp.c
@@ -231,7 +231,8 @@ static void add_line(sdp_message_t *msg, int lineno, const SalStreamDescription
 	}
 	switch(desc->dir){
 		case SalStreamSendRecv:
-			dir="sendrecv";
+			/*dir="sendrecv";*/
+			dir=NULL;
 		break;
 		case SalStreamRecvOnly:
 			dir="recvonly";
@@ -243,7 +244,7 @@ static void add_line(sdp_message_t *msg, int lineno, const SalStreamDescription
 			dir="inactive";
 			break;
 	}
-	sdp_message_a_attribute_add (msg, lineno, osip_strdup (dir),NULL);
+	if (dir) sdp_message_a_attribute_add (msg, lineno, osip_strdup (dir),NULL);
 }
 
 sdp_message_t *media_description_to_sdp(const SalMediaDescription *desc){