diff --git a/tests/ttls b/tests/ttls
index b0a64617..0851cc79 100755
--- a/tests/ttls
+++ b/tests/ttls
@@ -48,7 +48,7 @@ run_test() {
         expect {
             eof {exit 0;};
             default {exit 1;};
-        }" > "${TMPPDIR}/s_server_output" &
+        }" | tee "${TMPPDIR}/s_server_output" &
     SERVER_PID=$!
 
     read -r < "${TMPPDIR}/s_server_ready"