diff --git a/.github/workflows/macos_latest.yml b/.github/workflows/macos_latest.yml
index cdd99848376..d583beb090a 100644
--- a/.github/workflows/macos_latest.yml
+++ b/.github/workflows/macos_latest.yml
@@ -41,7 +41,7 @@ jobs:
 
     env:
       CC: ${{ matrix.CC }}
-      CONFIGURE_FLAGS: CC=${{ matrix.CC }} --enable-debug --enable-Werror --enable-buildbot ${{ matrix.RENEWAL }} ${{ matrix.HTTPLIB }} ${{ matrix.CLIENT_TYPE }} ${{ matrix.SANITIZER }} ${{ matrix.PACKET_VERSION }} CPPFLAGS=${{ matrix.CLASSIC_AUTOSPELL_LIST }}
+      CONFIGURE_FLAGS: "CC=${{ matrix.CC }} --enable-debug --enable-Werror --enable-buildbot ${{ matrix.RENEWAL }} ${{ matrix.HTTPLIB }} ${{ matrix.CLIENT_TYPE }} ${{ matrix.SANITIZER }} ${{ matrix.PACKET_VERSION }} CPPFLAGS=\"${{ matrix.CLASSIC_AUTOSPELL_LIST }}\""
       PACKET_VERSION: ${{ matrix.PACKET_VERSION }}
     steps:
       - uses: actions/checkout@v4