1 files changed, 1 insertions, 0 deletions

diff --git a/firmware/drivers/fat.h b/firmware/drivers/fat.h
index b23d8dfa08..8ef2982279 100644
--- a/firmware/drivers/fat.h
+++ b/firmware/drivers/fat.h
@@ -67,6 +67,7 @@ struct fat_dir
 
 
 extern int fat_mount(int startsector);
+extern void fat_size(unsigned int* size, unsigned int* free);
 
 extern int fat_create_dir(unsigned int currdir, char *name);
 extern int fat_startsector(void);