diff --git a/ChangeLog b/ChangeLog
index 93df674e9f..477d4fdca5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed May 28 08:42:51 2008  Tanaka Akira  <akr@fsij.org>
+
+	* numeric.c: "%" is required before PRI?VALUE.
+
 Tue May 27 22:10:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* eval_error.c (error_handle): SystemExit and SignalException throws
diff --git a/numeric.c b/numeric.c
index 36bf6b6fd2..6374982c3f 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1574,14 +1574,14 @@ check_int(SIGNED_VALUE num)
     else {
 	return;
     }
-    rb_raise(rb_eRangeError, "integer " PRIdVALUE " too %s to convert to `int'", num, s);
+    rb_raise(rb_eRangeError, "integer %"PRIdVALUE " too %s to convert to `int'", num, s);
 }
 
 static void
 check_uint(VALUE num)
 {
     if (num > UINT_MAX) {
-	rb_raise(rb_eRangeError, "integer " PRIuVALUE " too big to convert to `unsigned int'", num);
+	rb_raise(rb_eRangeError, "integer %"PRIuVALUE " too big to convert to `unsigned int'", num);
     }
 }
 
@@ -1651,7 +1651,7 @@ rb_num2fix(VALUE val)
 
     v = rb_num2long(val);
     if (!FIXABLE(v))
-	rb_raise(rb_eRangeError, "integer " PRIdVALUE " out of range of fixnum", v);
+	rb_raise(rb_eRangeError, "integer %"PRIdVALUE " out of range of fixnum", v);
     return LONG2FIX(v);
 }
 
@@ -1879,7 +1879,7 @@ int_chr(int argc, VALUE *argv, VALUE num)
       case 0:
 	if (i < 0 || 0xff < i) {
 	  out_of_range:
-	    rb_raise(rb_eRangeError, PRIdVALUE " out of char range", i);
+	    rb_raise(rb_eRangeError, "%"PRIdVALUE " out of char range", i);
 	}
 	c = i;
 	if (i < 0x80) {