diff --git a/src/search.cpp b/src/search.cpp
index 2c2321ee..1fc0bf1e 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1144,6 +1144,9 @@ moves_loop: // When in check, search starts from here
               int bonus = value > alpha ?  stat_bonus(newDepth)
                                         : -stat_bonus(newDepth);
 
+              if (move == ss->killers[0])
+              	  bonus += bonus / 4;
+
               update_continuation_histories(ss, movedPiece, to_sq(move), bonus);
           }
       }