diff --git a/ChangeLog b/ChangeLog
index 6f6f533428..9e2735e1e2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Dec 27 15:02:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* string.c (rb_str_casecmp): fixed using a wrong variable.
+	  [ruby-list:44402]
+
 Thu Dec 27 14:34:38 2007  Tanaka Akira  <akr@fsij.org>
 
 	* io.c (io_fflush): checks wbuf modification by other threads.
diff --git a/string.c b/string.c
index c4319a4896..7a88e79330 100644
--- a/string.c
+++ b/string.c
@@ -1437,7 +1437,7 @@ rb_str_casecmp(VALUE str1, VALUE str2)
 	return rb_str_cmp(str1, str2);
     }
 
-    p1 = RSTRING_PTR(str1); p1end = RSTRING_END(p1);
+    p1 = RSTRING_PTR(str1); p1end = RSTRING_END(str1);
     p2 = RSTRING_PTR(str2); p2end = RSTRING_END(str2);
     while (p1 < p1end && p2 < p2end) {
 	int c1 = rb_enc_codepoint(p1, p1end, enc);