diff --git a/src/search.cpp b/src/search.cpp
index 5e9f6476..ec4ae79d 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -161,7 +161,7 @@ void Search::Worker::start_searching() {
     }
 
     main_manager()->tm.init(limits, rootPos.side_to_move(), rootPos.game_ply(), options,
-                            main_manager()->originalPly);
+                            main_manager()->originalPly, main_manager()->originalTimeAdjust);
     tt.new_search();
 
     if (rootMoves.empty())
diff --git a/src/search.h b/src/search.h
index a61f253c..7cff10d5 100644
--- a/src/search.h
+++ b/src/search.h
@@ -208,6 +208,7 @@ class SearchManager: public ISearchManager {
             Depth                     depth) const;
 
     Stockfish::TimeManagement tm;
+    double                    originalTimeAdjust;
     int                       originalPly;
     int                       callsCnt;
     std::atomic_bool          ponder;
diff --git a/src/thread.cpp b/src/thread.cpp
index 5893f4b6..71134ead 100644
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -217,6 +217,7 @@ void ThreadPool::clear() {
     main_manager()->bestPreviousScore        = VALUE_INFINITE;
     main_manager()->bestPreviousAverageScore = VALUE_INFINITE;
     main_manager()->originalPly              = -1;
+    main_manager()->originalTimeAdjust       = -1;
     main_manager()->previousTimeReduction    = 1.0;
     main_manager()->tm.clear();
 }
diff --git a/src/timeman.cpp b/src/timeman.cpp
index f389e082..f6ca298a 100644
--- a/src/timeman.cpp
+++ b/src/timeman.cpp
@@ -44,8 +44,12 @@ void TimeManagement::advance_nodes_time(std::int64_t nodes) {
 // the bounds of time allowed for the current game ply. We currently support:
 //      1) x basetime (+ z increment)
 //      2) x moves in y seconds (+ z increment)
-void TimeManagement::init(
-  Search::LimitsType& limits, Color us, int ply, const OptionsMap& options, int& originalPly) {
+void TimeManagement::init(Search::LimitsType& limits,
+                          Color               us,
+                          int                 ply,
+                          const OptionsMap&   options,
+                          int&                originalPly,
+                          double&             originalTimeAdjust) {
     TimePoint npmsec = TimePoint(options["nodestime"]);
 
     // If we have no time, we don't need to fully initialize TM.
@@ -100,6 +104,10 @@ void TimeManagement::init(
     TimePoint timeLeft = std::max(TimePoint(1), limits.time[us] + limits.inc[us] * (mtg - 1)
                                                   - moveOverhead * (2 + mtg));
 
+    // Extra time according to timeLeft
+    if (originalTimeAdjust < 0)
+        originalTimeAdjust = 0.2078 + 0.1623 * std::log10(timeLeft);
+
     // x basetime (+ z increment)
     // If there is a healthy increment, timeLeft can exceed the actual available
     // game time for the current move, so also cap to a percentage of available game time.
@@ -109,6 +117,7 @@ void TimeManagement::init(
         double optExtra = scaledInc < 500 ? 1.0 : 1.13;
         if (ply - originalPly < 2)
             optExtra *= 0.95;
+        optExtra *= originalTimeAdjust;
 
         // Calculate time constants based on current time left.
         double logTimeInSec = std::log10(scaledTime / 1000.0);
@@ -118,6 +127,7 @@ void TimeManagement::init(
         optScale = std::min(0.0122 + std::pow(ply + 2.95, 0.462) * optConstant,
                             0.213 * limits.time[us] / timeLeft)
                  * optExtra;
+
         maxScale = std::min(6.64, maxConstant + ply / 12.0);
     }
 
diff --git a/src/timeman.h b/src/timeman.h
index 8f1bb563..8b763089 100644
--- a/src/timeman.h
+++ b/src/timeman.h
@@ -36,8 +36,12 @@ struct LimitsType;
 // the maximum available time, the game move number, and other parameters.
 class TimeManagement {
    public:
-    void init(
-      Search::LimitsType& limits, Color us, int ply, const OptionsMap& options, int& originalPly);
+    void init(Search::LimitsType& limits,
+              Color               us,
+              int                 ply,
+              const OptionsMap&   options,
+              int&                originalPly,
+              double&             originalTimeAdjust);
 
     TimePoint optimum() const;
     TimePoint maximum() const;