diff --git a/tests/playTests.sh b/tests/playTests.sh
index 52cbf7d3..6ae5bd8c 100755
--- a/tests/playTests.sh
+++ b/tests/playTests.sh
@@ -1239,8 +1239,8 @@ roundTripTest -g18000017 -P88 17
 roundTripTest -g18000018 -P94 18
 roundTripTest -g18000019 -P96 19
 
-roundTripTest -g5000000000 -P99 "1 --zstd=wlog=27"
-roundTripTest -g3700000000 -P0 "1 --zstd=strategy=6,wlog=27"   # ensure btlazy2 can survive an overflow rescale
+roundTripTest -g5000000000 -P99 "1 --zstd=wlog=25"
+roundTripTest -g3700000000 -P0 "1 --zstd=strategy=6,wlog=25"   # ensure btlazy2 can survive an overflow rescale
 
 fileRoundTripTest -g4193M -P99 1