diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 11157ee757..6fd0e4c02b 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -16,6 +16,11 @@
    The license applies to all entries newer than 2009-04-28.
 */
 
+2012-05-18 16:49 UTC+0200 Przemyslaw Czerpak (druzus/at/poczta.onet.pl)
+  * harbour/include/hbcom.ch
+  * harbour/src/rtl/hbcom.c
+    + added two new errors: HB_COM_ERR_ACCESS, HB_COM_ERR_NOCOM
+
 2012-05-17 14:07 UTC-0800 Pritpal Bedi (bedipritpal@hotmail.com)
   * contrib/hbqt/hbmk2_qt.hb
     ! Fix to last fix.
diff --git a/harbour/include/hbcom.ch b/harbour/include/hbcom.ch
index d3318968bb..9e7455a3ff 100644
--- a/harbour/include/hbcom.ch
+++ b/harbour/include/hbcom.ch
@@ -127,5 +127,7 @@
 #define HB_COM_ERR_ALREADYOPEN      8
 #define HB_COM_ERR_IO               9
 #define HB_COM_ERR_PIPE             10
+#define HB_COM_ERR_ACCESS           11
+#define HB_COM_ERR_NOCOM            12
 
 #endif /* HB_COM_CH_ */
diff --git a/harbour/src/rtl/hbcom.c b/harbour/src/rtl/hbcom.c
index 52b1b95105..c2a72310ba 100644
--- a/harbour/src/rtl/hbcom.c
+++ b/harbour/src/rtl/hbcom.c
@@ -322,6 +322,12 @@ static void hb_comSetOsError( PHB_COM pCom, HB_BOOL fError )
       case EAGAIN:
          pCom->error = HB_COM_ERR_TIMEOUT;
          break;
+      case EACCES:
+         pCom->error = HB_COM_ERR_ACCESS;
+         break;
+      case ENOTTY:
+         pCom->error = HB_COM_ERR_NOCOM;
+         break;
       default:
          pCom->error = HB_COM_ERR_OTHER;
          break;