diff --git a/.github/workflows/arm-ci.yml b/.github/workflows/arm-ci.yml
index 7c7461871..61d3669d3 100644
--- a/.github/workflows/arm-ci.yml
+++ b/.github/workflows/arm-ci.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Configure CMake
         run: |
           cmake -S . -B build \
-            -DCMAKE_CXX_FLAGS="-w -DHB_NO_MT" \
             -DCMAKE_TOOLCHAIN_FILE=${DEVKITPRO}/cmake/3DS.cmake
       - name: Build
-        run: cmake --build build
+        run: make CXXFLAGS="-w -DHB_NO_MT"
+        working-directory: /src/build