diff --git a/Modules/unicodedata.c b/Modules/unicodedata.c
index 269ba57..330b376 100644
--- a/Modules/unicodedata.c
+++ b/Modules/unicodedata.c
@@ -326,7 +326,7 @@
     int word;
     unsigned char* w;
 
-    if (SBase <= code && code <= SBase+SCount) {
+    if (SBase <= code && code < SBase+SCount) {
 	/* Hangul syllable. */
 	int SIndex = code - SBase;
 	int L = SIndex / NCount;