diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 7f1c548a..1b183a96 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -647,6 +647,7 @@ Torsten Herz <torsten.herz@web.de>
  to switch to an other channel
  for reporting a wrong EPG bugfix code number for the MAX_USEFUL_SUBTITLE_LENGTH fix
  for fixing a bug in resetting OSD color palettes
+ for adding missing 'const' to some cChannel member functions
 
 Steffen Becker <stbecker@rbg.informatik.tu-darmstadt.de>
  for reporting a problem with CPU load peaks (in the EPG scanner)
diff --git a/HISTORY b/HISTORY
index f021d700..cb0262c3 100644
--- a/HISTORY
+++ b/HISTORY
@@ -2449,6 +2449,8 @@ Video Disk Recorder Revision History
 
 - Fixed handling CAM menus in case the CAM connection fails while the menu
   is being presented (thanks to Thomas v. Keller for reportign this one).
+- Added missing 'const' to some cChannel member functions (thanks to Torsten
+  Herz).
 
 2003-10-24: Version 1.3.0
 
diff --git a/channels.h b/channels.h
index ca76af16..6fa1758c 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 1.8 2003/08/16 09:12:15 kls Exp $
+ * $Id: channels.h 1.9 2003/10/26 13:32:00 kls Exp $
  */
 
 #ifndef __CHANNELS_H
@@ -119,9 +119,9 @@ public:
   int Transmission(void) const { return transmission; }
   int Guard(void) const { return guard; }
   int Hierarchy(void) const { return hierarchy; }
-  bool IsCable(void) { return (source & cSource::st_Mask) == cSource::stCable; }
-  bool IsSat(void) { return (source & cSource::st_Mask) == cSource::stSat; }
-  bool IsTerr(void) { return (source & cSource::st_Mask) == cSource::stTerr; }
+  bool IsCable(void) const { return (source & cSource::st_Mask) == cSource::stCable; }
+  bool IsSat(void) const { return (source & cSource::st_Mask) == cSource::stSat; }
+  bool IsTerr(void) const { return (source & cSource::st_Mask) == cSource::stTerr; }
   tChannelID GetChannelID(void) const;
   };