diff --git a/dbms/src/Storages/MergeTree/DiskSpaceMonitor.cpp b/dbms/src/Storages/MergeTree/DiskSpaceMonitor.cpp
index c897d370a49..f16fb83f211 100644
--- a/dbms/src/Storages/MergeTree/DiskSpaceMonitor.cpp
+++ b/dbms/src/Storages/MergeTree/DiskSpaceMonitor.cpp
@@ -237,7 +237,7 @@ SchemaSelector::SchemaSelector(const Poco::Util::AbstractConfiguration & config,
         if (!std::all_of(name.begin(), name.end(), isWordCharASCII))
             throw Exception("Schema name can contain only alphanumeric and '_' (" + name + ")", ErrorCodes::EXCESSIVE_ELEMENT_IN_CONFIG);
         schemas.emplace(name, Schema{config, config_prefix + "." + name, disks});
-        LOG_INFO(logger, "Storage schema " << name << " Sloaded");
+        LOG_INFO(logger, "Storage schema " << name << " loaded");
     }
 
     constexpr auto default_schema_name = "default";
diff --git a/dbms/src/Storages/MergeTree/DiskSpaceMonitor.h b/dbms/src/Storages/MergeTree/DiskSpaceMonitor.h
index 9bae644d4b9..1900b63cf45 100644
--- a/dbms/src/Storages/MergeTree/DiskSpaceMonitor.h
+++ b/dbms/src/Storages/MergeTree/DiskSpaceMonitor.h
@@ -170,6 +170,8 @@ public:
         {
             /// Just make reservation if size is 0
             if (size == 0) {
+                std::lock_guard lock(DiskSpaceMonitor::mutex);
+                reserves = &DiskSpaceMonitor::reserved[disk_ptr->getName()];
                 ++reserves->reservation_count;
                 valid = true;
                 return;