diff --git a/vars.sh b/vars.sh
index e6a5c0a..bb7ddb8 100644
--- a/vars.sh
+++ b/vars.sh
@@ -15,7 +15,7 @@ export LFS="/mnt/lfs"
 export LFS_BINUTILS="binutils-2.40"
 export LFS_GCC="gcc-12.2.0"
 export LFS_LINUX="linux-6.1.11"
-export LFS_M4="M4-1.4.19"
+export LFS_M4="m4-1.4.19"
 export LFS_GLIBC="glibc-2.37"
 export LFS_BASH="bash-5.2.15"
 export LFS_COREUTILS="coreutils-9.1"