diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 85c2fd1d..d154ea20 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -2101,6 +2101,7 @@ Matthias Schwarzott <zzam@gentoo.org>
  for suggesting to move the "all" target in plugin Makefiles before the
  "Implicit rules", so that a plain "make" will compile everything
  for adding DESTDIR and PREFIX handling to the Makefile
+ for fixing some compiler warnings with gcc-4.2.0
 
 Martin Ostermann <martin@familie-ostermann.de>
  for fixing processing the PDCDescriptor in 'libsi' on big endian systems
diff --git a/HISTORY b/HISTORY
index 45037d50..982598f7 100644
--- a/HISTORY
+++ b/HISTORY
@@ -5390,3 +5390,4 @@ Video Disk Recorder Revision History
 - Fixed detecting whether a particular locale is actually supported.
 - Added a note about LANG having to be set to a valid locale in INSTALL
   (suggested by Matthias Fechner).
+- Fixed some compiler warnings with gcc-4.2.0 (thanks to Matthias Schwarzott).
diff --git a/i18n.c b/i18n.c
index b475a3b3..cf0798fd 100644
--- a/i18n.c
+++ b/i18n.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: i18n.c 1.315 2007/08/24 13:08:04 kls Exp $
+ * $Id: i18n.c 1.316 2007/08/24 13:15:48 kls Exp $
  *
  *
  */
@@ -62,7 +62,7 @@ const char *LanguageCodeList[] = {
   NULL
   };
 
-static char *I18nLocaleDir = LOCDIR;
+static const char *I18nLocaleDir = LOCDIR;
 
 static cStringList LanguageLocales;
 static cStringList LanguageNames;
diff --git a/keys.h b/keys.h
index da4b7a45..2adcad8a 100644
--- a/keys.h
+++ b/keys.h
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: keys.h 1.12 2007/08/04 14:40:23 kls Exp $
+ * $Id: keys.h 1.13 2007/08/24 13:15:48 kls Exp $
  */
 
 #ifndef __KEYS_H
@@ -82,7 +82,7 @@ enum eKeys { // "Up" and "Down" must be the first two keys!
 
 struct tKey {
   eKeys type;
-  char *name;
+  const char *name;
   };
 
 class cKey : public cListObject {
diff --git a/menu.c b/menu.c
index 4d94b610..444fd750 100644
--- a/menu.c
+++ b/menu.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: menu.c 1.460 2007/08/18 09:03:05 kls Exp $
+ * $Id: menu.c 1.461 2007/08/24 13:15:48 kls Exp $
  */
 
 #include "menu.h"
@@ -1040,7 +1040,7 @@ int cMenuScheduleItem::Compare(const cListObject &ListObject) const
   return r;
 }
 
-static char *TimerMatchChars = " tT";
+static const char *TimerMatchChars = " tT";
 
 bool cMenuScheduleItem::Update(bool Force)
 {
diff --git a/rcu.c b/rcu.c
index d81c0b6a..34b43877 100644
--- a/rcu.c
+++ b/rcu.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: rcu.c 1.15 2006/12/02 11:12:28 kls Exp $
+ * $Id: rcu.c 1.16 2007/08/24 13:15:48 kls Exp $
  */
 
 #include "rcu.h"
@@ -257,7 +257,7 @@ void cRcuRemote::SetNumber(int n, bool Hex)
   data = m;
 }
 
-void cRcuRemote::SetString(char *s)
+void cRcuRemote::SetString(const char *s)
 {
   const char *chars = mode == modeH ? "0123456789ABCDEF" : "0123456789-EHLP ";
   int n = 0;
diff --git a/rcu.h b/rcu.h
index 7592dc2b..8824f660 100644
--- a/rcu.h
+++ b/rcu.h
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: rcu.h 1.6 2005/12/31 15:09:25 kls Exp $
+ * $Id: rcu.h 1.7 2007/08/24 13:15:48 kls Exp $
  */
 
 #ifndef __RCU_H
@@ -31,7 +31,7 @@ private:
   void SetMode(unsigned char Mode);
   void SetNumber(int n, bool Hex = false);
   void SetPoints(unsigned char Dp, bool On);
-  void SetString(char *s);
+  void SetString(const char *s);
   bool DetectCode(unsigned char *Code);
   virtual void Action(void);
   virtual void ChannelSwitch(const cDevice *Device, int ChannelNumber);
diff --git a/thread.c b/thread.c
index 4eb64f1e..a0647d0e 100644
--- a/thread.c
+++ b/thread.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: thread.c 1.61 2007/06/17 12:43:40 kls Exp $
+ * $Id: thread.c 1.62 2007/08/24 13:15:48 kls Exp $
  */
 
 #include "thread.h"
@@ -416,7 +416,7 @@ bool cPipe::Open(const char *Command, const char *Mode)
      return false;
      }
 
-  char *mode = "w";
+  const char *mode = "w";
   int iopipe = 0;
 
   if (pid > 0) { // parent process