diff --git a/.github/workflows/cross.yaml b/.github/workflows/cross.yaml
index 5fc12d2..01f1b6d 100644
--- a/.github/workflows/cross.yaml
+++ b/.github/workflows/cross.yaml
@@ -90,7 +90,7 @@ jobs:
 
     - run: |
         QEMU_LD_PREFIX=/usr/${{matrix.target.label}} \
-        ./mnl <(echo '{{extern "manool.org.18/std/0.6/all"} in Out.WriteLine[Pi[F64] " " Pi[F32]]}')
+        ./mnl <(echo '{{extern "manool.org.18/std/0.6/all"} in Out.WriteLine[Acos[F64[(~1)$]] " " Acos[F32[(~1)$]]]}')
 
     - name: Upload Results
       uses: actions/upload-artifact@v4