diff --git a/src/history.h b/src/history.h
index 401be213..19928a21 100644
--- a/src/history.h
+++ b/src/history.h
@@ -120,6 +120,7 @@ INLINE void UpdateCorrectionHistory(Thread *thread, Stack *ss, int bestScore, in
     ContCorrHistoryUpdate(2, bonus);
     ContCorrHistoryUpdate(3, bonus);
     ContCorrHistoryUpdate(4, bonus);
+    ContCorrHistoryUpdate(5, bonus);
 }
 
 INLINE int GetQuietHistory(const Thread *thread, Stack *ss, Move move) {
@@ -143,5 +144,6 @@ INLINE int GetCorrectionHistory(const Thread *thread, const Stack *ss) {
           + *MatCorrEntry() / 25
           + *ContCorrEntry(2) / 50
           + *ContCorrEntry(3) / 44
-          + *ContCorrEntry(4) / 47;
+          + *ContCorrEntry(4) / 47
+          + *ContCorrEntry(5) / 48;
 }
diff --git a/src/threads.c b/src/threads.c
index 85c20a17..d5436a56 100644
--- a/src/threads.c
+++ b/src/threads.c
@@ -91,7 +91,7 @@ void PrepareSearch(Position *pos, Move searchmoves[]) {
         t->rootMoveCount = rootMoveCount;
         for (Depth d = 0; d <= MAX_PLY; ++d)
             (t->ss+SS_OFFSET+d)->ply = d;
-        for (Depth d = -4; d < 0; ++d)
+        for (Depth d = -5; d < 0; ++d)
             (t->ss+SS_OFFSET+d)->continuation = &t->continuation[0][0][EMPTY][0],
             (t->ss+SS_OFFSET+d)->contCorr = &t->contCorrHistory[EMPTY][0];
     }