diff --git a/ChangeLog b/ChangeLog
index bad1f25948..7879f28fdd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jun  3 13:35:40 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* process.c (run_exec_pgroup): C99 ism.
+
 Tue Jun  3 12:51:57 2008  Akinori MUSHA  <knu@iDaemons.org>
 
 	* enumerator.c (enumerator_allocate, enumerator_ptr): Properly
diff --git a/process.c b/process.c
index 682ba259bc..ae877c1147 100644
--- a/process.c
+++ b/process.c
@@ -2015,11 +2015,12 @@ run_exec_pgroup(VALUE obj, VALUE save)
      * No race condition, even without setpgid from the parent.
      * (Is there an environment which has setpgid but FD_CLOEXEC?)
      */
+    pid_t pgroup;
     if (!NIL_P(save)) {
         /* maybe meaningless with no fork environment... */
         rb_ary_store(save, EXEC_OPTION_PGROUP, PIDT2NUM(getpgrp()));
     }
-    pid_t pgroup = NUM2PIDT(obj);
+    pgroup = NUM2PIDT(obj);
     if (pgroup == 0) {
         pgroup = getpid();
     }