diff --git a/src/modem.c b/src/modem.c
index 3e775b5..9244a49 100644
--- a/src/modem.c
+++ b/src/modem.c
@@ -768,16 +768,6 @@ static void _modem_set_call_waiting_control_callback(GSM * gsm)
 }
 
 
-/* gsm_modem_set_connected_presentation */
-int gsm_modem_set_connected_presentation(GSMModem * gsmm, gboolean set)
-{
-	char cmd[] = "AT+COLP=X";
-
-	cmd[8] = set ? '1' : '0';
-	return (gsm_queue(gsmm->gsm, cmd) != NULL) ? 0 : 1;
-}
-
-
 /* gsm_modem_set_echo */
 int gsm_modem_set_echo(GSMModem * gsmm, gboolean echo)
 {
diff --git a/src/modem.h b/src/modem.h
index 832e0ca..627d3a5 100644
--- a/src/modem.h
+++ b/src/modem.h
@@ -93,7 +93,6 @@ int gsm_modem_reset(GSMModem * gsmm);
 
 int gsm_modem_set_call_presentation(GSMModem * gsmm, gboolean set);
 int gsm_modem_set_call_waiting_control(GSMModem * gsmm, gboolean unsollicited);
-int gsm_modem_set_connected_presentation(GSMModem * gsmm, gboolean set);
 int gsm_modem_set_echo(GSMModem * gsmm, gboolean echo);
 int gsm_modem_set_extended_errors(GSMModem * gsmm, gboolean extended);
 int gsm_modem_set_extended_ring_reports(GSMModem * gsmm, gboolean extended);