diff --git a/builds/install/misc/firebird.conf b/builds/install/misc/firebird.conf
index a9d45e9908..8b626fd57a 100644
--- a/builds/install/misc/firebird.conf
+++ b/builds/install/misc/firebird.conf
@@ -447,25 +447,6 @@
 #
 #PrioritySwitchDelay = 100
 
-#
-# Number of cycles of the scheduler (PrioritySwitchDelay ms) before
-# thread are destroyed/closed.  Rather than immediately destroy/closed
-# worker threads (which would require a semaphore and blocking call --
-# significant overhead), the thread scheduler maintains a pool of the
-# threads.  When a thread has completed it's task/work, it is marked as
-# idle.  The idle thread is destroyed/closed after X iterations of the
-# scheduler loop.
-#
-# For a server with a very large number of connections (presumably more
-# than several hundred) the setting value should be increased. 
-#
-# The setting represents the number of loop iterations to be made before
-# the thread is destroyed/closed.
-#
-# Type: integer
-#
-#DeadThreadsCollection = 50
-
 #
 # Number of additional 'intervals' given to a 'High' priority thread.
 #
diff --git a/src/common/config/config.cpp b/src/common/config/config.cpp
index 9a3606c65a..3efbe8d393 100644
--- a/src/common/config/config.cpp
+++ b/src/common/config/config.cpp
@@ -373,14 +373,6 @@ int Config::getPrioritySwitchDelay()
 	return rc;
 }
 
-int Config::getDeadThreadsCollection()
-{
-	int rc = (int) sysConfig.values[KEY_DEAD_THREADS_COLLECTION];
-	if (rc < 1)
-		rc = 1;
-	return rc;
-}
-
 int Config::getPriorityBoost()
 {
 	int rc = (int) sysConfig.values[KEY_PRIORITY_BOOST];
diff --git a/src/common/config/config.h b/src/common/config/config.h
index 566840ec16..7bfd655fb7 100644
--- a/src/common/config/config.h
+++ b/src/common/config/config.h
@@ -229,11 +229,6 @@ public:
 	*/
 	static int getPrioritySwitchDelay();
 
-	/*
-		Dead threads collection
-	*/
-	static int getDeadThreadsCollection();
-
 	/*
 		Priority boost
 	*/
diff --git a/src/jrd/os/win32/thd_priority.cpp b/src/jrd/os/win32/thd_priority.cpp
index 2b14e786d1..a1bbe82cbe 100644
--- a/src/jrd/os/win32/thd_priority.cpp
+++ b/src/jrd/os/win32/thd_priority.cpp
@@ -37,7 +37,6 @@
 
 // configurable parameters
 #define THPS_TIME (Config::getPrioritySwitchDelay())	// ms between rescheds
-//#define THPS_TICKS (Config::getDeadThreadsCollection())	// sched loops before thread killing
 
 #include <stdio.h>
 #include <errno.h>