diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index c6025dffafd..ef0ce1884e7 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,7 @@
 Thu Apr 23 09:32:58 1998  Jason Merrill  <jason@yorick.cygnus.com>
 
+	* error.c (dump_type_real): Declare canonical_name.
+
 	* typeck.c (comp_target_types): Fix PMFs.
 
 Wed Apr 22 13:24:48 1998  Mark Mitchell  <mmitchell@usa.net>
diff --git a/gcc/cp/error.c b/gcc/cp/error.c
index a9e9661490c..18c82a1da46 100644
--- a/gcc/cp/error.c
+++ b/gcc/cp/error.c
@@ -140,6 +140,7 @@ static void
 dump_type_real (t, v, canonical_name)
      tree t;
      int v;			/* verbose? */
+     int canonical_name;
 {
   if (t == NULL_TREE)
     return;