diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d4c8ef63..a8150dfc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,13 +43,12 @@ jobs:
           update: true
           install: >-
             autotools
-      - name: Prepare LibreSSL
+      - name: Prepare LibreSSL for Windows
         if: ${{ matrix.os == 'windows-latest' }}
-        shell: msys2 {0}
         run: |
           git config --global core.autocrlf false
-          ./prepareLibreSSL.sh
-      - name: Prepare LibreSSL
+          msys2 -c './prepareLibreSSL.sh'
+      - name: Prepare LibreSSL for Ubuntu or MacOS
         if: ${{ matrix.os != 'windows-latest' }}
         run: |
           ./prepareLibreSSL.sh