diff --git a/src/mills.cpp b/src/mills.cpp
index 8150319d..75efdaab 100644
--- a/src/mills.cpp
+++ b/src/mills.cpp
@@ -471,7 +471,7 @@ Depth get_search_depth(const Position *pos)
             const Depth placingDepthTable9[25] = {
                  +1,  1,  +1,  1,    /* 0 ~ 3 */
                  +3,  3,  +3, 15,    /* 4 ~ 7 */
-                 +15, 2,  +8,  0,    /* 8 ~ 11 */
+                 +15, 2,  +7,  0,    /* 8 ~ 11 */
                  +0,  0,  +0,  0,    /* 12 ~ 15 */
                  +0,  0,  +0,  0,    /* 16 ~ 19 */
                  +0,  0,  +0,  0,    /* 20 ~ 23 */