diff --git a/src/search.cpp b/src/search.cpp
index 1e82203a..4365b215 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1085,7 +1085,8 @@ moves_loop: // When in check, search starts here
           }
 
           // Check extensions (~1 Elo)
-          else if (   givesCheck && depth > 8)
+          else if (   givesCheck
+                   && depth > 9)
               extension = 1;
 
           // Quiet ttMove extensions (~1 Elo)