diff --git a/sys/boot/arm/at91/libat91/loader_prompt.c b/sys/boot/arm/at91/libat91/loader_prompt.c
index 264765a2641..37f4cebed12 100644
--- a/sys/boot/arm/at91/libat91/loader_prompt.c
+++ b/sys/boot/arm/at91/libat91/loader_prompt.c
@@ -420,7 +420,7 @@ Bootloader(int(*inputFunction)(int))
 
 	printf("\r\n>");
 
-	while (ch >= 0)
+	while (1)
 		if ((ch = ((*inputFunction)(0))) > 0)
 			ServicePrompt(ch);
 }