diff --git a/include/ChangeLog b/include/ChangeLog
index 7e242a2da..9ba0423b6 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2010-01-11  Tristan Gingold  <gingold@adacore.com>
+
+	* demangle.h (ada_demangle): Add prototype.
+
 2010-01-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	PR bootstrap/41771
diff --git a/include/demangle.h b/include/demangle.h
index 76fab0a45..2ab27602b 100644
--- a/include/demangle.h
+++ b/include/demangle.h
@@ -160,6 +160,9 @@ java_demangle_v3_callback (const char *mangled,
 extern char*
 java_demangle_v3 (const char *mangled);
 
+char *
+ada_demangle (const char *mangled, int options);
+
 enum gnu_v3_ctor_kinds {
   gnu_v3_complete_object_ctor = 1,
   gnu_v3_base_object_ctor,