diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9b0392ae7..55d87fddb 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -191,6 +191,7 @@ jobs:
             -DCMAKE_C_COMPILER=clang \
             -DCMAKE_CXX_COMPILER=clang++ \
             -DCMAKE_NM=llvm-nm \
+            -DCMAKE_SYSTEM_NAME=WASI \
             -DWASI_SDK_INCLUDE_TESTS=ON \
             -DWASI_SDK_LTO=OFF
       - run: ninja -C build