diff --git a/tests/playground/Makefile b/tests/playground/Makefile
index 70bf63fe43..4c2d5e47e5 100644
--- a/tests/playground/Makefile
+++ b/tests/playground/Makefile
@@ -101,7 +101,7 @@ bench/qsort.%.bench: BENCH_PARAMS = 400
 bench/rbmap.%.bench: BENCH_PARAMS = 5000000
 
 rbmap_shared.%.out: rbmap_checkpoint.%.out; ln -f $< $@
-bench/rbmap_shared.%.bench: BENCH_PARAMS = 500000 1
+bench/rbmap_shared.%.bench: BENCH_PARAMS = 5000000 1
 
 rbmap_checkpoint_10.%.out: rbmap_checkpoint.%.out; ln -f $< $@
 bench/rbmap_checkpoint_10.%.bench: BENCH_PARAMS = 5000000 10