diff --git a/AUTHORS b/AUTHORS
index fc987c8da..853dd3a7a 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -223,6 +223,7 @@ Ron Britvich (Britvich)
 rqs
 Rui Coelho (ruicoelhopedro)
 rustam-cpp
+Ryan Hirsch
 Ryan Schmitt
 Ryan Takker
 Sami Kiminki (skiminki)
diff --git a/src/search.cpp b/src/search.cpp
index 8c9c4f8bc..74e0c1233 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -890,7 +890,7 @@ Value Search::Worker::search(
     }
 
     // Step 9. Null move search with verification search
-    if (cutNode && ss->staticEval >= beta - 17 * depth + 359 && !excludedMove
+    if (cutNode && ss->staticEval >= beta - 17 * depth - 50 * improving + 359 && !excludedMove
         && pos.non_pawn_material(us) && ss->ply >= nmpMinPly && !is_loss(beta))
     {
         assert((ss - 1)->currentMove != Move::null());