diff --git a/config.h b/config.h
index aa62e59..00ae722 100644
--- a/config.h
+++ b/config.h
@@ -21,10 +21,11 @@
 
 /* FS config section */
 #define FS_MAX_DEVICE_FILE_NAME_LEN 512
-#define FS_BLOCK_SIZE 4096
+#define FS_BLOCK_SIZE 16
 #define FS_MAX_BITMAP_SIZE 64
 #define FS_MAX_PATH_LEN 512
 #define FS_MAX_OPEN_FD 32
+#define FS_MAX_FNAME_LEN 11
 
 
 #endif