diff --git a/src/main/java/com/avaje/ebean/config/dbplatform/DbDdlSyntax.java b/src/main/java/com/avaje/ebean/config/dbplatform/DbDdlSyntax.java
index 262ebaf8d..8866ef78c 100644
--- a/src/main/java/com/avaje/ebean/config/dbplatform/DbDdlSyntax.java
+++ b/src/main/java/com/avaje/ebean/config/dbplatform/DbDdlSyntax.java
@@ -11,7 +11,7 @@ public class DbDdlSyntax {
 
   private boolean inlinePrimaryKeyConstraint = false;
 
-  private boolean addOneToOneUniqueContraint = false;
+  private boolean addOneToOneUniqueContraint = true;
 
   private int maxConstraintNameLength = 32;