diff --git a/README.md b/README.md
index 53adda8..837a877 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,2 @@
-# chaintool
+# toolchain
 quecpython Tools
diff --git a/windows/helios-toolchain.exe b/windows/helios-toolchain.exe
deleted file mode 100644
index 2824fd4..0000000
--- a/windows/helios-toolchain.exe
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:1025fec7450fc476caa4a75ecb3867e941e0daed24ae6e86fe2cae6f3f04a30f
-size 478716802