diff --git a/ChangeLog b/ChangeLog
index 103873f570..95b12e9ebb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Oct 13 23:25:10 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* parse.y (HEAPCNT): bison allocates indivisible size.
+	  fixed: [ruby-core:06261]
+
 Wed Oct 12 12:51:56 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
 
 	* ext/openssl/ossl.c (Init_openssl): should call
diff --git a/parse.y b/parse.y
index 86dcfc7cc8..a5673603d4 100644
--- a/parse.y
+++ b/parse.y
@@ -8642,7 +8642,7 @@ rb_parser_end_seen_p(VALUE vparser)
 }
 
 #ifdef YYMALLOC
-#define HEAPCNT(n, size) ((size) % sizeof(YYSTYPE) ? 0 : (n) * (size) / sizeof(YYSTYPE))
+#define HEAPCNT(n, size) ((n) * (size) / sizeof(YYSTYPE))
 #define NEWHEAP(cnt) rb_node_newnode(NODE_ALLOCA, 0, (VALUE)parserp->heap, cnt)
 #define ADD2HEAP(n, ptr) ((parserp->heap = (n))->u1.node = (ptr))