diff --git a/HISTORY b/HISTORY
index 2b3ceffd..06696427 100644
--- a/HISTORY
+++ b/HISTORY
@@ -10079,3 +10079,5 @@ Video Disk Recorder Revision History
   work as before, because the default implementation of cStatus::OsdStatusMessage2() calls
   cStatus::OsdStatusMessage().
 - Adjusted PLUGINS.html to the new API version numbering introduced in version 2.7.2.
+- The function cPlugin::MainThreadHook() has been deprecated and may be removed in future
+  versions. Use proper locking instead.
diff --git a/PLUGINS.html b/PLUGINS.html
index ae11a165..ac6c7b7f 100644
--- a/PLUGINS.html
+++ b/PLUGINS.html
@@ -74,7 +74,6 @@ structures and allows it to hook itself into specific areas to perform special a
 <li><a href="#Main menu entry">Main menu entry</a>
 <li><a href="#User interaction">User interaction</a>
 <li><a href="#Housekeeping">Housekeeping</a>
-<li><a href="#Main thread hook">Main thread hook</a>
 <li><a href="#Activity">Activity</a>
 <li><a href="#Wakeup">Wakeup</a>
 <li><a href="#Setup parameters">Setup parameters</a>
@@ -692,27 +691,6 @@ interaction is possible. If a specific action takes longer than a few seconds,
 the plugin should launch a separate thread to do this.
 </b>
 
-<hr><h2><a name="Main thread hook">Main thread hook</a></h2>
-
-<div class="blurb">Pushing in...</div><p>
-
-Normally a plugin only reacts on user input if directly called through its
-<a href="#Main menu entry">main menu entry</a>, or performs some background
-activity in a separate thread. However, sometimes a plugin may need to do
-something in the context of the main program thread, without being explicitly
-called up by the user. In such a case it can implement the function
-
-<p><table><tr><td class="code"><pre>
-virtual void MainThreadHook(void);
-</pre></td></tr></table><p>
-
-in which it can do this. This function is called for every plugin once during
-every cycle of VDR's main program loop, which typically happens once every
-second.
-<b>Be very careful when using this function, and make sure you return from it
-as soon as possible! If you spend too much time in this function, the user
-interface performance will become sluggish!</b>
-
 <hr><h2><a name="Activity">Activity</a></h2>
 
 <div class="blurb">Now is not a good time!</div><p>
diff --git a/newplugin b/newplugin
index 4a7d68b7..2ed7c4d1 100755
--- a/newplugin
+++ b/newplugin
@@ -12,7 +12,7 @@
 # See the main source file 'vdr.c' for copyright information and
 # how to reach the author.
 #
-# $Id: newplugin 5.1 2021/01/02 14:32:20 kls Exp $
+# $Id: newplugin 5.2 2025/02/12 22:22:20 kls Exp $
 
 $PLUGIN_NAME = $ARGV[0] || die "Usage: newplugin <name>\n";
 
@@ -216,7 +216,6 @@ public:
   virtual bool Start(void);
   virtual void Stop(void);
   virtual void Housekeeping(void);
-  virtual void MainThreadHook(void);
   virtual cString Active(void);
   virtual time_t WakeupTime(void);
   virtual const char *MainMenuEntry(void) { return MAINMENUENTRY; }
@@ -274,12 +273,6 @@ void cPlugin${PLUGIN_CLASS}::Housekeeping(void)
   // Perform any cleanup or other regular tasks.
 }
 
-void cPlugin${PLUGIN_CLASS}::MainThreadHook(void)
-{
-  // Perform actions in the context of the main program thread.
-  // WARNING: Use with great care - see PLUGINS.html!
-}
-
 cString cPlugin${PLUGIN_CLASS}::Active(void)
 {
   // Return a message string if shutdown should be postponed
diff --git a/plugin.c b/plugin.c
index 7c0d55c8..efe8651d 100644
--- a/plugin.c
+++ b/plugin.c
@@ -4,9 +4,10 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: plugin.c 4.4 2020/12/16 11:54:06 kls Exp $
+ * $Id: plugin.c 5.1 2025/02/12 22:22:20 kls Exp $
  */
 
+#define MUTE_DEPRECATED_MAINTHREADHOOK
 #include "plugin.h"
 #include <ctype.h>
 #include <dirent.h>
diff --git a/plugin.h b/plugin.h
index 64632c55..a419f3f2 100644
--- a/plugin.h
+++ b/plugin.h
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: plugin.h 4.1 2020/06/29 09:29:06 kls Exp $
+ * $Id: plugin.h 5.1 2025/02/12 22:22:20 kls Exp $
  */
 
 #ifndef __PLUGIN_H
@@ -43,6 +43,9 @@ public:
   virtual bool Start(void);
   virtual void Stop(void);
   virtual void Housekeeping(void);
+#ifndef MUTE_DEPRECATED_MAINTHREADHOOK
+  [[deprecated("use proper locking instead")]]
+#endif
   virtual void MainThreadHook(void);
   virtual cString Active(void);
   virtual time_t WakeupTime(void);