diff --git a/board/sandbox/sandbox.c b/board/sandbox/sandbox.c
index 3c63d45dd3e..902b99ed500 100644
--- a/board/sandbox/sandbox.c
+++ b/board/sandbox/sandbox.c
@@ -48,6 +48,7 @@ unsigned long timer_read_counter(void)
 static enum env_location env_locations[] = {
 	ENVL_NOWHERE,
 	ENVL_EXT4,
+	ENVL_FAT,
 };
 
 enum env_location env_get_location(enum env_operation op, int prio)