diff --git a/testsuites/libtests/ChangeLog b/testsuites/libtests/ChangeLog
index 85cdd7b54f..5457479f88 100644
--- a/testsuites/libtests/ChangeLog
+++ b/testsuites/libtests/ChangeLog
@@ -1,3 +1,7 @@
+2011-12-13	Ralf Corsépius <ralf.corsepius@rtems.org>
+
+	* complex/docomplex.in: Generate prototype docomplex* prototype.
+
 2011-12-09	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	* ftp01/Makefile.am: 
diff --git a/testsuites/libtests/complex/docomplex.in b/testsuites/libtests/complex/docomplex.in
index 9b9ae3c5fd..e476f6dfd3 100644
--- a/testsuites/libtests/complex/docomplex.in
+++ b/testsuites/libtests/complex/docomplex.in
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010 by
+ * Copyright (c) 2010, 2011 by
  * Ralf Corsepius, Ulm/Germany. All rights reserved.
  *
  * Permission to use, copy, modify, and distribute this software
@@ -17,6 +17,8 @@
 #include <complex.h>
 #include <stdio.h>
 
+extern void docomplex@FSUFFIX@ (void);
+
 void
 docomplex@FSUFFIX@ (void)
 {