diff --git a/HISTORY b/HISTORY
index 0f9a6fa0..71d01c8d 100644
--- a/HISTORY
+++ b/HISTORY
@@ -5663,3 +5663,6 @@ Video Disk Recorder Revision History
 - The CAM menu now stays open as long as it is automatically updated, even without
   pressing a remote control key. This is important when updating the CAM firmware
   from the transponder.
+- No longer trying to switch to an available channel if the primary device has
+  no valid programme and a menu is open (avoids interference with the CAM in
+  case a CAM menu is open).
diff --git a/vdr.c b/vdr.c
index ffe1ff36..af690ea7 100644
--- a/vdr.c
+++ b/vdr.c
@@ -22,7 +22,7 @@
  *
  * The project's page is at http://www.cadsoft.de/vdr
  *
- * $Id: vdr.c 1.311 2008/02/23 13:19:10 kls Exp $
+ * $Id: vdr.c 1.312 2008/02/23 15:36:01 kls Exp $
  */
 
 #include <getopt.h>
@@ -730,7 +730,7 @@ int main(int argc, char *argv[])
         // Make sure we have a visible programme in case device usage has changed:
         if (!EITScanner.Active() && cDevice::PrimaryDevice()->HasDecoder() && !cDevice::PrimaryDevice()->HasProgramme()) {
            static time_t lastTime = 0;
-           if (Now - lastTime > MINCHANNELWAIT) {
+           if (!Menu && Now - lastTime > MINCHANNELWAIT) { // !Menu to avoid interfering with the CAM if a CAM menu is open
               cChannel *Channel = Channels.GetByNumber(cDevice::CurrentChannel());
               if (Channel && (Channel->Vpid() || Channel->Apid(0))) {
                  if (!Channels.SwitchTo(cDevice::CurrentChannel()) // try to switch to the original channel...