diff --git a/source/fatfs/ff.c b/source/fatfs/ff.c
index 84ca874..3d0d976 100644
--- a/source/fatfs/ff.c
+++ b/source/fatfs/ff.c
@@ -2925,6 +2925,7 @@ BYTE check_fs (	/* 0:FAT, 1:exFAT, 2:Valid BS but not FAT, 3:Not a BS, 4:Disk er
 	if (fs->win[BS_JmpBoot] == 0xE9 || (fs->win[BS_JmpBoot] == 0xEB && fs->win[BS_JmpBoot + 2] == 0x90)) {
 		if ((ld_dword(fs->win + BS_FilSysType) & 0xFFFFFF) == 0x544146) return 0;	/* Check "FAT" string */
 		if (ld_dword(fs->win + BS_FilSysType32) == 0x33544146) return 0;			/* Check "FAT3" string */
+        if (ld_dword(fs->win + BS_FilSysType) == 0x00000000) return 0;			    /* all zeroes, hacked(!!!) in */
 	}
 #if _FS_EXFAT
 	if (!mem_cmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT   ", 11)) return 1;
diff --git a/source/filetype.c b/source/filetype.c
index e6a370c..16bdcee 100644
--- a/source/filetype.c
+++ b/source/filetype.c
@@ -24,7 +24,7 @@ u32 IdentifyFileType(const char* path) {
     } else if (getbe16(header + 0x1FE) == 0x55AA) { // migt be FAT or MBR
         if ((strncmp((char*) header + 0x36, "FAT12   ", 8) == 0) || (strncmp((char*) header + 0x36, "FAT16   ", 8) == 0) ||
             (strncmp((char*) header + 0x36, "FAT     ", 8) == 0) || (strncmp((char*) header + 0x52, "FAT32   ", 8) == 0) ||
-            ((getle64(header + 0x36) == 0) && (getle16(header + 0x0B) == 0x20))) { // last one is a special case for public.sav
+            ((getle64(header + 0x36) == 0) && (getle16(header + 0x0B) == 0x200))) { // last one is a special case for public.sav
             return IMG_FAT; // this is an actual FAT header
         } else if (((getle32(header + 0x1BE + 0x8) + getle32(header + 0x1BE + 0xC)) < (fsize / 0x200)) && // check file size
             (getle32(header + 0x1BE + 0x8) > 0) && (getle32(header + 0x1BE + 0xC) >= 0x800) && // check first partition sanity