diff --git a/src/depth.h b/src/depth.h
index 86af1dff..96b9197c 100644
--- a/src/depth.h
+++ b/src/depth.h
@@ -26,19 +26,12 @@
 ////
 
 enum Depth {
-  DEPTH_ZERO = 0,
-  DEPTH_MAX = 200,  //  100 * OnePly;
-  DEPTH_NONE = -254 // -127 * OnePly
+
+  OnePly = 2,
+  DEPTH_NONE = -127 * OnePly
 };
 
 
-////
-//// Constants
-////
-
-const Depth OnePly = Depth(2);
-
-
 ////
 //// Inline functions
 ////
diff --git a/src/search.cpp b/src/search.cpp
index 978f6622..3d26d430 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1897,7 +1897,7 @@ namespace {
         && pos.type_of_piece_on(move_to(m)) != PAWN
         && pos.see_sign(m) >= 0)
     {
-        result += OnePly/2;
+        result += OnePly / 2;
         *dangerous = true;
     }