diff --git a/source/fatfile.c b/source/fatfile.c
index cbceec8..dcd10b1 100644
--- a/source/fatfile.c
+++ b/source/fatfile.c
@@ -340,34 +340,6 @@ int _FAT_close_r (struct _reent *r, int fd) {
 	return ret;
 }
 
-sec_t _FAT_Num_Sectors_To_Cache(CACHE* cache, FILE_POSITION position,PARTITION* partition) {
-	uint32_t limit;
-	uint32_t ra_start, ra_end, ra_sectors;
-
-
-	limit = cache->sectorsPerPage;
-
-	ra_start = position.cluster;
-	ra_sectors = - position.sector;
-
-	while (true) {
-		ra_end = ra_start;
-		ra_start = _FAT_fat_nextCluster(partition, ra_end);
-
-		if (ra_start != ra_end + 1)
-			break;
-
-		ra_sectors += partition->sectorsPerCluster;
-
-		if (ra_sectors >= limit)
-			break;
-	}
-	if (ra_sectors > limit) ra_sectors = limit;
-
-	return ra_sectors;
-
-}
-
 ssize_t _FAT_read_r (struct _reent *r, int fd, char *ptr, size_t len) {
 	FILE_STRUCT* file = (FILE_STRUCT*)  fd;
 	PARTITION* partition;