diff --git a/tests/performance/parse_illegal_datetime.xml b/tests/performance/parse_illegal_datetime.xml
index 29195a01b912..94e0794819f6 100644
--- a/tests/performance/parse_illegal_datetime.xml
+++ b/tests/performance/parse_illegal_datetime.xml
@@ -8,7 +8,8 @@
     </fill_query>
 
     <settings>
-        <max_threads>1</max_threads>
+        <!-- need test concurrency performance -->
+        <max_threads>10</max_threads>
     </settings>
 
     <query>