diff --git a/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryCollectionReturn.java b/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryCollectionReturn.java
index da50378fc8..89c55ca0eb 100644
--- a/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryCollectionReturn.java
+++ b/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryCollectionReturn.java
@@ -38,8 +38,8 @@ import org.hibernate.LockMode;
  * @author Steve Ebersole
  */
 public class NativeSQLQueryCollectionReturn extends NativeSQLQueryNonScalarReturn {
-	private String ownerEntityName;
-	private String ownerProperty;
+	private final String ownerEntityName;
+	private final String ownerProperty;
 	private final int hashCode;
 
 	/**
diff --git a/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryJoinReturn.java b/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryJoinReturn.java
index dfa25babe2..eaa950267c 100644
--- a/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryJoinReturn.java
+++ b/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryJoinReturn.java
@@ -35,8 +35,8 @@ import org.hibernate.LockMode;
  * @author Steve Ebersole
  */
 public class NativeSQLQueryJoinReturn extends NativeSQLQueryNonScalarReturn {
-	private String ownerAlias;
-	private String ownerProperty;
+	private final String ownerAlias;
+	private final String ownerProperty;
 	private final int hashCode;
 	/**
 	 * Construct a return descriptor representing some form of fetch.
diff --git a/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryRootReturn.java b/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryRootReturn.java
index 122fa8119e..87e15636c8 100644
--- a/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryRootReturn.java
+++ b/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryRootReturn.java
@@ -36,7 +36,7 @@ import org.hibernate.LockMode;
  * @author Steve Ebersole
  */
 public class NativeSQLQueryRootReturn extends NativeSQLQueryNonScalarReturn {
-	private String returnEntityName;
+	private final String returnEntityName;
 	private final int hashCode;
 
 	/**
diff --git a/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryScalarReturn.java b/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryScalarReturn.java
index 388196250d..1ba109c533 100644
--- a/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryScalarReturn.java
+++ b/core/src/main/java/org/hibernate/engine/query/sql/NativeSQLQueryScalarReturn.java
@@ -32,8 +32,8 @@ import org.hibernate.type.Type;
  * @author gloegl
  */
 public class NativeSQLQueryScalarReturn implements NativeSQLQueryReturn {
-	private Type type;
-	private String columnAlias;
+	private final Type type;
+	private final String columnAlias;
 	private final int hashCode;
 
 	public NativeSQLQueryScalarReturn(String alias, Type type) {