diff --git a/hibernate-rx-core/src/main/java/org/hibernate/rx/event/impl/AbstractRxSaveEventListener.java b/hibernate-rx-core/src/main/java/org/hibernate/rx/event/impl/AbstractRxSaveEventListener.java
index 11ea224..420aaf7 100644
--- a/hibernate-rx-core/src/main/java/org/hibernate/rx/event/impl/AbstractRxSaveEventListener.java
+++ b/hibernate-rx-core/src/main/java/org/hibernate/rx/event/impl/AbstractRxSaveEventListener.java
@@ -281,16 +281,19 @@ else if (identifierType == IntegerType.INSTANCE) {
                                        .thenCompose( v ->  ((RxEntityPersister) persister).setRxPropertyValues(entity, values) );
                }

+               // Deep copy into a new array, valuesForAction, because it may get modified by
+               // when it gets added to an EntityInsertAction.
+               final Object[] valuesForAction =  new Object[values.length];
                TypeHelper.deepCopy(
                                values,
                                types,
                                persister.getPropertyUpdateability(),
-                               values,
+                               valuesForAction,
                                source
                );

                CompletionStage<AbstractEntityInsertAction> insert = addInsertAction(
-                               values, id, entity, persister, useIdentityColumn, source, shouldDelayIdentityInserts
+                               valuesForAction, id, entity, persister, useIdentityColumn, source, shouldDelayIdentityInserts
                );

                CompletionStage<Void> cascadeAfterSave = rxCascadeAfterSave(source, persister, entity, context);