diff --git a/c/src/lib/libcpu/arm/ChangeLog b/c/src/lib/libcpu/arm/ChangeLog
index d2ee041681..77f317c172 100644
--- a/c/src/lib/libcpu/arm/ChangeLog
+++ b/c/src/lib/libcpu/arm/ChangeLog
@@ -1,3 +1,7 @@
+2008-12-11	Ralf Corsepius <ralf.corsepius@rtems.org>
+
+	* at91rm9200/dbgu/dbgu.c: Add missing prototype.
+
 2008-09-22	Joel Sherrill <joel.sherrill@oarcorp.com>
 
 	* at91rm9200/dbgu/dbgu.c: Use standardized bsp_cleanup() which can
diff --git a/c/src/lib/libcpu/arm/at91rm9200/dbgu/dbgu.c b/c/src/lib/libcpu/arm/at91rm9200/dbgu/dbgu.c
index b6c860076b..fef0132e85 100644
--- a/c/src/lib/libcpu/arm/at91rm9200/dbgu/dbgu.c
+++ b/c/src/lib/libcpu/arm/at91rm9200/dbgu/dbgu.c
@@ -218,7 +218,7 @@ static void _BSP_put_char( char c ) {
 
 BSP_output_char_function_type BSP_output_char = _BSP_put_char;
 
-int _BSP_poll_char()
+int _BSP_poll_char(void)
 {
   return dbgu_poll_read(0);
 }