diff --git a/src/lib3270/options.c b/src/lib3270/options.c
index 6288c77..1f1c5e9 100644
--- a/src/lib3270/options.c
+++ b/src/lib3270/options.c
@@ -81,22 +81,28 @@ LIB3270_EXPORT int lib3270_set_color_type(H3270 *hSession, unsigned short colort
 {
 	CHECK_SESSION_HANDLE(hSession);
 
+	if(hSession->cstate != LIB3270_NOT_CONNECTED)
+		return EBUSY;
+
 	switch(colortype)
 	{
 	case 0:
 	case 16:
 		hSession->colors 	= 16;
 		hSession->mono		= 0;
+		hSession->m3279		= 1;
 		break;
 
 	case 8:
 		hSession->colors	= 8;
 		hSession->mono		= 0;
+		hSession->m3279		= 1;
 		break;
 
 	case 2:
 		hSession->colors 	= 16;
 		hSession->mono		= 1;
+		hSession->m3279		= 0;
 		break;
 
 	default:
diff --git a/src/lib3270/telnet.c b/src/lib3270/telnet.c
index 8bf566f..2b7fbfc 100644
--- a/src/lib3270/telnet.c
+++ b/src/lib3270/telnet.c
@@ -684,6 +684,8 @@ int net_connect(H3270 *session, const char *host, char *portname, Boolean ls, Bo
 
 	}
 
+	snprintf(session->full_model_name,LIB3270_FULL_MODEL_NAME_LENGTH,"IBM-327%c-%d",session->m3279 ? '9' : '8', session->model_num);
+
 	/* set up temporary termtype
 	if (session->termname == CN && session->std_ds_host)
 	{
--
libgit2 0.21.2