IGNITE-2099: Minors.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/portable/PortableClassDescriptor.java b/modules/core/src/main/java/org/apache/ignite/internal/portable/PortableClassDescriptor.java
index 24be9db..2dda9eb 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/portable/PortableClassDescriptor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/portable/PortableClassDescriptor.java
@@ -788,6 +788,7 @@
      *
      * @return {@code true} if to use, {@code false} otherwise.
      */
+    @SuppressWarnings("unchecked")
     private boolean initUseOptimizedMarshallerFlag() {
         for (Class c = cls; c != null && !c.equals(Object.class); c = c.getSuperclass()) {
             try {