diff --git a/source/arm11/console.c b/source/arm11/console.c
index 496306f..96bbba9 100644
--- a/source/arm11/console.c
+++ b/source/arm11/console.c
@@ -191,11 +191,11 @@
 	int i, count = 0;
 	const char *tmp = ptr;
 
-	if(!tmp || len<=0) return -1;
+	if(!tmp || (int)len<=0) return -1;
 
 	i = 0;
 
-	while(i<len) {
+	while(i<(int)len) {
 
 		chr = *(tmp++);
 		i++; count++;