diff --git a/.github/workflows/mac-build.yml b/.github/workflows/mac-build.yml
index 23c223876..fc5f8faed 100644
--- a/.github/workflows/mac-build.yml
+++ b/.github/workflows/mac-build.yml
@@ -146,7 +146,7 @@ jobs:
               echo Xvfb not used, this is a --enable-aqua build
             }
           fi
-          ( runXvfb :0; make test-classic; exit $? ) | tee out-classic.txt || {
+          ( runXvfb :0; make test-classic TESTFLAGS="-file unixSelect.test -verbose t"; exit $? ) | tee out-classic.txt || {
             echo "::error::Failure during Test (classic)"
             exit 1
           }