diff --git a/HISTORY b/HISTORY
index 529a8996..240d6880 100644
--- a/HISTORY
+++ b/HISTORY
@@ -8032,7 +8032,7 @@ Video Disk Recorder Revision History
   the last replayed recording (if any) by pressing Ok repeatedly in the Recordings
   menu.
 
-2013-11-03: Version 2.1.3
+2013-11-04: Version 2.1.3
 
 - Changed the return value of cPositioner::HorizonLongitude() to 0 in case the
   latitude of the antenna location is beyond +/-81 degrees.
@@ -8055,3 +8055,5 @@ Video Disk Recorder Revision History
   Strasser).
 - The new menu category mcRecordingEdit is now used to mark menus that edit recording
   properties (suggested by Stefan Braun).
+- Changes in the teletext PID no longer cause retuning (and thus interrupting a
+  recording).
diff --git a/channels.c b/channels.c
index 7cb7e883..0c9dcedc 100644
--- a/channels.c
+++ b/channels.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: channels.c 3.1 2013/10/11 11:03:26 kls Exp $
+ * $Id: channels.c 3.2 2013/11/04 10:11:51 kls Exp $
  */
 
 #include "channels.h"
@@ -330,8 +330,10 @@ static int IntArrayToString(char *s, const int *a, int Base = 10, const char n[]
 void cChannel::SetPids(int Vpid, int Ppid, int Vtype, int *Apids, int *Atypes, char ALangs[][MAXLANGCODE2], int *Dpids, int *Dtypes, char DLangs[][MAXLANGCODE2], int *Spids, char SLangs[][MAXLANGCODE2], int Tpid)
 {
   int mod = CHANNELMOD_NONE;
-  if (vpid != Vpid || ppid != Ppid || vtype != Vtype || tpid != Tpid)
+  if (vpid != Vpid || ppid != Ppid || vtype != Vtype)
      mod |= CHANNELMOD_PIDS;
+  if (tpid != Tpid)
+     mod |= CHANNELMOD_AUX;
   int m = IntArraysDiffer(apids, Apids, alangs, ALangs) | IntArraysDiffer(atypes, Atypes) | IntArraysDiffer(dpids, Dpids, dlangs, DLangs) | IntArraysDiffer(dtypes, Dtypes) | IntArraysDiffer(spids, Spids, slangs, SLangs);
   if (m & STRDIFF)
      mod |= CHANNELMOD_LANGS;
@@ -388,7 +390,8 @@ void cChannel::SetPids(int Vpid, int Ppid, int Vtype, int *Apids, int *Atypes, c
      spids[MAXSPIDS] = 0;
      tpid = Tpid;
      modification |= mod;
-     Channels.SetModified();
+     if (Number())
+        Channels.SetModified();
      }
 }
 
diff --git a/channels.h b/channels.h
index 815cb479..f719f1e5 100644
--- a/channels.h
+++ b/channels.h
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: channels.h 2.16 2012/06/17 11:21:33 kls Exp $
+ * $Id: channels.h 3.1 2013/11/04 09:52:02 kls Exp $
  */
 
 #ifndef __CHANNELS_H
@@ -22,6 +22,7 @@
 #define CHANNELMOD_NAME     0x01
 #define CHANNELMOD_PIDS     0x02
 #define CHANNELMOD_ID       0x04
+#define CHANNELMOD_AUX      0x08
 #define CHANNELMOD_CA       0x10
 #define CHANNELMOD_TRANSP   0x20
 #define CHANNELMOD_LANGS    0x40