diff --git a/sdk/head/units.h b/sdk/head/units.h
index 1bb4c1a..b3eae39 100644
--- a/sdk/head/units.h
+++ b/sdk/head/units.h
@@ -12,6 +12,7 @@
 /* Storage size units */
 #define UNIT_GIB 0x40000000
 #define UNIT_MIB 0x100000
+#define UNIT_KIB 0x400
 
 /* Time units */
 #define UNIT_FS_PER_MS 1000000000000ULL