diff --git a/ChangeLog b/ChangeLog
index 31cac1cb53..9b28d71ff3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Oct 12 20:40:29 2012  Tanaka Akira  <akr@fsij.org>
+
+	* process.c (posix_sh_cmds): the command name of colon is ":".
+
 Fri Oct 12 18:18:03 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* file.c (rb_get_path_check): path name must not contain NUL bytes.
diff --git a/process.c b/process.c
index bd3cea94ea..f2da92a8e8 100644
--- a/process.c
+++ b/process.c
@@ -2036,9 +2036,9 @@ rb_exec_fillarg(VALUE prog, int argc, VALUE *argv, VALUE env, VALUE opthash, VAL
 	static const char posix_sh_cmds[][9] = {
 	    "!",		/* reserved */
 	    ".",		/* special built-in */
+	    ":",		/* special built-in */
 	    "break",		/* special built-in */
 	    "case",		/* reserved */
-	    "colon",		/* special built-in */
 	    "continue",		/* special built-in */
 	    "do",		/* reserved */
 	    "done",		/* reserved */