diff --git a/src/search.cpp b/src/search.cpp
index d2c77365b..7736c4121 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1053,6 +1053,8 @@ moves_loop:  // When in check, search starts here
                     futilityValue += 108;
 
                 // Futility pruning: parent node
+                // (*Scaler): Generally, more frequent futility pruning
+                // scales well with respect to time and threads
                 if (!ss->inCheck && lmrDepth < 12 && futilityValue <= alpha)
                 {
                     if (bestValue <= futilityValue && !is_decisive(bestValue)