diff --git a/README.md b/README.md
index bf95640..4963827 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ It is recommended to cross reference the contents of this repository with [the L
 
 All `make all*` targets depend on a GNU-compatible C toolchain capable of generating x86-64 ELF objects. Usually `gcc/binutils` or `clang/llvm/lld` provided by any x86-64 UNIX like (including Linux) distribution will suffice.
 
-Additionally, building an ISO with `make all` requires `xorriso`, and building a HDD/USB image with `make all-hdd` requires `sfdisk` (usually from `gdisk` or `gptfdisk` packages) and `mtools`.
+Additionally, building an ISO with `make all` requires `xorriso`, and building a HDD/USB image with `make all-hdd` requires `sgdisk` (usually from `gdisk` or `gptfdisk` packages) and `mtools`.
 
 ### Makefile targets