diff --git a/coreapi/sal_eXosip2_sdp.c b/coreapi/sal_eXosip2_sdp.c
index 2b439c000..050a53a76 100644
--- a/coreapi/sal_eXosip2_sdp.c
+++ b/coreapi/sal_eXosip2_sdp.c
@@ -18,6 +18,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 
+#include "ortp/port.h"
 #include "ortp/b64.h"
 #include "ortp/ortp_srtp.h"
 #include "sal.h"