diff --git a/.github/workflows/test-windows.yaml b/.github/workflows/test-windows.yaml
index 40390cfe..9a0d6bcb 100644
--- a/.github/workflows/test-windows.yaml
+++ b/.github/workflows/test-windows.yaml
@@ -67,7 +67,7 @@ jobs:
         run: pip install numpy
 
       - name: Install code
-        run: pip install --no-deps -e . --global-option="build_ext" --global-option="--use-system-fitsio"
+        run: pip install --no-deps -e .
 
       - name: test
         run: |
diff --git a/setup.py b/setup.py
index f7fcc237..f5c20e17 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
 import shutil
 
 
-if "--use-system-fitsio" in sys.argv:
+if os.name == 'nt' or "--use-system-fitsio" in sys.argv:
     del sys.argv[sys.argv.index("--use-system-fitsio")]
     USE_SYSTEM_FITSIO = True
 else: