diff --git a/testsuites/samples/ChangeLog b/testsuites/samples/ChangeLog
index daa5a09726..04bcba39a8 100644
--- a/testsuites/samples/ChangeLog
+++ b/testsuites/samples/ChangeLog
@@ -1,3 +1,7 @@
+2010-03-11	Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* fileio/init.c: Fix warnings for ctype methods.
+
 2009-11-02	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	* loopback/init.c: Adjust return-type of rtems_bsdnet_loopattach to
diff --git a/testsuites/samples/fileio/init.c b/testsuites/samples/fileio/init.c
index b8d1b31433..645499efeb 100644
--- a/testsuites/samples/fileio/init.c
+++ b/testsuites/samples/fileio/init.c
@@ -316,7 +316,7 @@ bool fileio_str2size(const char *str,uint32_t   *res_ptr)
 {
   bool failed = false;
   unsigned long size;
-  char suffix = ' ';
+  unsigned char suffix = ' ';
 
   if (1 > sscanf(str,"%lu%c",&size,&suffix)) {
     failed = true;