Cleanup for GCC-4.x
diff --git a/board/dave/PPChameleonEVB/PPChameleonEVB.c b/board/dave/PPChameleonEVB/PPChameleonEVB.c
index b425d63..5f2c705 100644
--- a/board/dave/PPChameleonEVB/PPChameleonEVB.c
+++ b/board/dave/PPChameleonEVB/PPChameleonEVB.c
@@ -185,7 +185,7 @@
 
 int checkboard (void)
 {
-	unsigned char str[64];
+	char str[64];
 	int i = getenv_r ("serial#", str, sizeof(str));
 
 	puts ("Board: ");