diff --git a/lib/toolbox/tar/tar_archive.c b/lib/toolbox/tar/tar_archive.c
index 43f33ee53..b6e0ce807 100644
--- a/lib/toolbox/tar/tar_archive.c
+++ b/lib/toolbox/tar/tar_archive.c
@@ -8,7 +8,7 @@
 
 #define TAG "TarArch"
 #define MAX_NAME_LEN 254
-#define FILE_BLOCK_SIZE 512
+#define FILE_BLOCK_SIZE (10 * 1024)
 
 #define FILE_OPEN_NTRIES 10
 #define FILE_OPEN_RETRY_DELAY 25