diff --git a/run b/run
index 7d82451..a58476a 100755
--- a/run
+++ b/run
@@ -189,7 +189,6 @@ step40() {
   {
     pushd "../zig-$TO_"
     cp ../zig-$FROM_/stage1/zig1.wasm stage1/zig1.wasm
-    mkdir build
     fullbuild
     build/stage3/bin/zig build update-zig1
     popd