diff --git a/.github/workflows/c-demos.yml b/.github/workflows/c-demos.yml
index c22f0b7..3c3f7ed 100644
--- a/.github/workflows/c-demos.yml
+++ b/.github/workflows/c-demos.yml
@@ -108,7 +108,7 @@ jobs:
           submodules: recursive
 
       - name: Create build directory
-        run: cmake -B ./build
+        run: cmake -G "${{ matrix.make_file }}" -B ./build
 
       - name: Build demo
         run: cmake --build ./build --target falcon_demo