diff --git a/kern/include/sys/types.h b/kern/include/sys/types.h
index 509bce5..1bcc4bd 100644
--- a/kern/include/sys/types.h
+++ b/kern/include/sys/types.h
@@ -16,7 +16,7 @@
 typedef uint32_t __gid_t;
 typedef int64_t __off64_t;
 typedef __off64_t off64_t;
-typedef int32_t __blksize_t;
+typedef int64_t __blksize_t;
 typedef int64_t __blkcnt64_t;
 
 typedef uint64_t __le64;