diff --git a/src/search.cpp b/src/search.cpp
index 27f0f987085..2efb0eb7d2b 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1142,7 +1142,7 @@ Value search(Position& pos, Stack* ss, Value alpha, Value beta, Depth depth, boo
 
         // Decrease reduction for first generated move (ttMove)
         else if (move == ttMove)
-            r--;
+            r = 0;
 
         ss->statScore = 2 * thisThread->mainHistory[us][from_to(move)]
                       + (*contHist[0])[movedPiece][to_sq(move)]