diff --git a/HISTORY b/HISTORY
index 1a538b8a..1038d27d 100644
--- a/HISTORY
+++ b/HISTORY
@@ -2589,3 +2589,4 @@ Video Disk Recorder Revision History
 - Activated detection of radio channels (to avoid reports about "channels not
   being detected that used to be detected with the 'scan' utility or the
   original 'autopid' patch ;-).
+- Channels with a zero VPID no longer write a PPID into channels.conf.
diff --git a/pat.c b/pat.c
index 312e2f15..d7cf862c 100644
--- a/pat.c
+++ b/pat.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: pat.c 1.4 2004/01/05 11:42:30 kls Exp $
+ * $Id: pat.c 1.5 2004/01/16 15:43:34 kls Exp $
  */
 
 #include "pat.h"
@@ -369,7 +369,7 @@ void cPatFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length
                 }
             }
         if (Setup.UpdateChannels >= 2) {
-           Channel->SetPids(Vpid, Ppid, Apids[0], Apids[1], Dpids[0], Dpids[1], Tpid);
+           Channel->SetPids(Vpid, Vpid ? Ppid : 0, Apids[0], Apids[1], Dpids[0], Dpids[1], Tpid);
            Channel->SetCaIds(CaDescriptors->CaIds());
            Channel->SetCaDescriptors(CaDescriptorHandler.AddCaDescriptors(CaDescriptors));
            }