diff --git a/server/bundles/io.cloudbeaver.model/src/io/cloudbeaver/model/session/WebSession.java b/server/bundles/io.cloudbeaver.model/src/io/cloudbeaver/model/session/WebSession.java
index 8de2f7ee5d..9703ecd468 100644
--- a/server/bundles/io.cloudbeaver.model/src/io/cloudbeaver/model/session/WebSession.java
+++ b/server/bundles/io.cloudbeaver.model/src/io/cloudbeaver/model/session/WebSession.java
@@ -1034,7 +1034,7 @@ public class WebSession extends BaseWebSession
         }
 
         @Override
-        public void subTask(String name) {
+        public void subTask(@NotNull String name) {
             addInfoMessage(name);
         }
     }
diff --git a/server/bundles/io.cloudbeaver.model/src/io/cloudbeaver/model/session/monitor/TaskProgressMonitor.java b/server/bundles/io.cloudbeaver.model/src/io/cloudbeaver/model/session/monitor/TaskProgressMonitor.java
index 7b509fb364..4d7a7234b9 100644
--- a/server/bundles/io.cloudbeaver.model/src/io/cloudbeaver/model/session/monitor/TaskProgressMonitor.java
+++ b/server/bundles/io.cloudbeaver.model/src/io/cloudbeaver/model/session/monitor/TaskProgressMonitor.java
@@ -47,7 +47,7 @@ public class TaskProgressMonitor extends ProxyProgressMonitor {
     }
 
     @Override
-    public void subTask(String name) {
+    public void subTask(@NotNull String name) {
         super.subTask(name);
         asyncTask.setStatus(name);
         WebEventUtils.sendAsyncTaskEvent(webSession, asyncTask);