1 files changed, 2 insertions, 1 deletions

diff --git a/src/core/constants.h b/src/core/constants.h
index fb1450e..3e6941d 100644
--- a/src/core/constants.h
+++ b/src/core/constants.h
@@ -360,7 +360,8 @@
     MM18_FACE(MOVE_U) | MM18_FACE(MOVE_D) |\
     MM_SINGLE(MOVE_R2) | MM_SINGLE(MOVE_L2) |\
     MM_SINGLE(MOVE_F2) | MM_SINGLE(MOVE_B2))
-#define MM18_HTR (MM18_ALLMOVES & ~MM18_NOHALFTURNS)
+#define MM18_DR_NOD      (MM18_DR & ~MM18_FACE(MOVE_D))
+#define MM18_HTR         (MM18_ALLMOVES & ~MM18_NOHALFTURNS)
 
 #define TM_SINGLE(t)   (UINT64_C(1) << (uint64_t)(t))
 #define TM_ALLTRANS    UINT64_C(0xFFFFFFFFFFFF)