diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b4df8e2e..fcb26a7f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -113,4 +113,4 @@ jobs:
           install: mingw-w64-${{matrix.env}}-gcc
       - name: Build ${{ matrix.sys }} ${{ matrix.env }}
         run: |
-          x86_64-w64-mingw32-gcc-win32 -Ofast -D_WIN32 -o run.exe -I. run.c win.c
+          make win64