diff --git a/ChangeLog b/ChangeLog
index 80b4948242..d24b659bde 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Jun  3 21:22:52 2012  Tanaka Akira  <akr@fsij.org>
+
+	* process.c (rb_exec_getargs): remove rb_exec_arg argument.
+
 Sun Jun  3 21:14:26 2012  Tadayoshi Funaba  <tadf@dotrb.org>
 
 	* marshal.c: calls directly rb_{Complex,Rational}_marshal_load().
diff --git a/process.c b/process.c
index ead4dd88c8..2bc5eac599 100644
--- a/process.c
+++ b/process.c
@@ -1810,7 +1810,7 @@ rb_check_argv(int argc, VALUE *argv)
 }
 
 static VALUE
-rb_exec_getargs(int *argc_p, VALUE **argv_p, int accept_shell, VALUE *env_ret, VALUE *opthash_ret, struct rb_exec_arg *e)
+rb_exec_getargs(int *argc_p, VALUE **argv_p, int accept_shell, VALUE *env_ret, VALUE *opthash_ret)
 {
     VALUE hash, prog;
 
@@ -1868,7 +1868,7 @@ rb_exec_arg_init(int argc, VALUE *argv, int accept_shell, struct rb_exec_arg *e)
 {
     VALUE prog;
     VALUE env = Qnil, opthash = Qnil;
-    prog = rb_exec_getargs(&argc, &argv, accept_shell, &env, &opthash, e);
+    prog = rb_exec_getargs(&argc, &argv, accept_shell, &env, &opthash);
     rb_exec_fillarg(prog, argc, argv, env, opthash, e);
     return prog;
 }