diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e2ecea4..e8229c4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -35,6 +35,7 @@ jobs:
       shell: bash
       run: |
         curl -sSfL https://releases.llvm.org/9.0.0/clang+llvm-9.0.0-x86_64-darwin-apple.tar.xz | tar xJf -
+        ls clang+llvm-9.0.0-x86_64-darwin-apple
         export CLANG_DIR=`pwd`/clang+llvm-9.0.0-x86_64-darwin-apple/bin
         echo "::add-path::$CLANG_DIR"
         echo "::set-env name=WASM_CC::$CLANG_DIR/clang"