diff -r 8ccb3ad39ee4 Modules/unicodedata.c
--- a/Modules/unicodedata.c	Sun Feb 05 22:58:46 2017 +0200
+++ b/Modules/unicodedata.c	Mon Feb 06 14:43:29 2017 +0900
@@ -688,8 +688,8 @@
           code = SBase + (LIndex*VCount+VIndex)*TCount;
           i+=2;
           if (i < len &&
-              TBase <= PyUnicode_READ(kind, data, i) &&
-              PyUnicode_READ(kind, data, i) <= (TBase+TCount)) {
+              TBase < PyUnicode_READ(kind, data, i) &&
+              PyUnicode_READ(kind, data, i) < (TBase+TCount)) {
               code += PyUnicode_READ(kind, data, i)-TBase;
               i++;
           }