diff --git a/c/src/lib/libbsp/arm/csb337/ChangeLog b/c/src/lib/libbsp/arm/csb337/ChangeLog
index 9daff9a625..7fc1519a38 100644
--- a/c/src/lib/libbsp/arm/csb337/ChangeLog
+++ b/c/src/lib/libbsp/arm/csb337/ChangeLog
@@ -1,3 +1,7 @@
+2011-12-07	Ralf Corsépius <ralf.corsepius@rtems.org>
+
+	* startup/umonsupp.c: Include <rtems/umon.h> (Missing prototype).
+
 2011-11-07	Joel Sherrill <joel.sherrill@oarcorp.com>
 
 	PR 1953/bsps
diff --git a/c/src/lib/libbsp/arm/csb337/startup/umonsupp.c b/c/src/lib/libbsp/arm/csb337/startup/umonsupp.c
index c2d3d662e5..357340f8cb 100644
--- a/c/src/lib/libbsp/arm/csb337/startup/umonsupp.c
+++ b/c/src/lib/libbsp/arm/csb337/startup/umonsupp.c
@@ -13,6 +13,7 @@
  */
 
 #include <bsp.h>
+#include <rtems/umon.h>
 
 /*
  * BSP specific routine to help when calling monConnect().  This