diff --git a/src/search.cpp b/src/search.cpp
index b68b3026..f561b183 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1246,7 +1246,7 @@ moves_loop:  // When in check, search starts here
             rm.effort += nodes - nodeCount;
 
             rm.averageScore =
-              rm.averageScore != -VALUE_INFINITE ? (2 * value + rm.averageScore) / 3 : value;
+              rm.averageScore != -VALUE_INFINITE ? (value + rm.averageScore) / 2 : value;
 
             // PV move or new best move?
             if (moveCount == 1 || value > alpha)