diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index a3bc542374..cc6a78037f 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -800,6 +800,7 @@ jobs:
         timeout-minutes: 10
         run: |
           export TFLAGS='-j8 ~WebSockets ~SCP ~612 ${{ matrix.tflags }}'
+          TFLAGS+=' ~987'  # 'SMTPS with redundant explicit SSL request'
           if [[ '${{ matrix.install }}' = *'libssh2[core,zlib]'* ]]; then
             TFLAGS+=' ~SFTP'
           elif [[ '${{ matrix.install }}' = *'libssh '* ]]; then