diff --git a/programs/server/Server.cpp b/programs/server/Server.cpp
index 5804d28d337..11b8c2b2540 100644
--- a/programs/server/Server.cpp
+++ b/programs/server/Server.cpp
@@ -859,6 +859,9 @@ if (ThreadFuzzer::instance().isEffective())
             if (config->has("max_partition_size_to_drop"))
                 global_context->setMaxPartitionSizeToDrop(config->getUInt64("max_partition_size_to_drop"));
 
+            if (config->has("max_concurrent_queries"))
+                global_context->getProcessList().setMaxSize(config->getInt("max_concurrent_queries", 0));
+
             if (!initial_loading)
             {
                 /// We do not load ZooKeeper configuration on the first config loading