c3-lang/libffi

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0dd2cda..835f3e8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -119,7 +119,7 @@ jobs:
           chmod go-rw /tmp/cfk
           ls -l /tmp/cfk
           ssh -o StrictHostKeyChecking=no -i /tmp/cfk -p ${{ matrix.CFARM_PORT }} ${{ secrets.CFARM_USERNAME }}@${{ matrix.CFARM_HOST }} "mkdir -p t/$GITHUB_RUN_NUMBER"
-          scp -o StrictHostKeyChecking=no -i /tmp/cfk -P ${{ matrix.CFARM_PORT }} -a * ${{ secrets.CFARM_USERNAME }}@${{ matrix.CFARM_HOST }}:t/$GITHUB_RUN_NUMBER
+          scp -o StrictHostKeyChecking=no -i /tmp/cfk -P ${{ matrix.CFARM_PORT }} -r * ${{ secrets.CFARM_USERNAME }}@${{ matrix.CFARM_HOST }}:t/$GITHUB_RUN_NUMBER
           ssh -o StrictHostKeyChecking=no -i /tmp/cfk -p ${{ matrix.CFARM_PORT }} ${{ secrets.CFARM_USERNAME }}@${{ matrix.CFARM_HOST }} "(cd t/$GITHUB_RUN_NUMBER; ./configure; make; make check)"
           scp -o StrictHostKeyChecking=no -i /tmp/cfk -P ${{ matrix.CFARM_PORT }} ${{ secrets.CFARM_USERNAME }}@${{ matrix.CFARM_HOST }}:t/$GITHUB_RUN_NUMBER/*/testsuite/*.log .