diff --git a/tests/playTests.sh b/tests/playTests.sh
index 2dfb4fa07..04a90e3c2 100755
--- a/tests/playTests.sh
+++ b/tests/playTests.sh
@@ -1225,7 +1225,7 @@ then
     println "\n===>  zstdmt round-trip tests "
     roundTripTest -g4M "1 -T0"
     roundTripTest -g8M "3 -T2"
-    roundTripTest -g8M "19 -T0 --long"
+    roundTripTest -g8M "19 --long"
     roundTripTest -g8000K "2 --threads=2"
     fileRoundTripTest -g4M "19 -T2 -B1M"