diff --git a/c/src/lib/libbsp/arm/csb336/include/bsp.h b/c/src/lib/libbsp/arm/csb336/include/bsp.h
index 407f039f7e..ed036d5454 100644
--- a/c/src/lib/libbsp/arm/csb336/include/bsp.h
+++ b/c/src/lib/libbsp/arm/csb336/include/bsp.h
@@ -23,7 +23,6 @@
 #include <bsp/default-initial-extension.h>
 
 #include <rtems.h>
-#include <rtems/iosupp.h>
 #include <mc9328mxl.h>
 
 #ifdef __cplusplus