diff --git a/src/main/java/com/salesforce/dataloader/dyna/RelationshipField.java b/src/main/java/com/salesforce/dataloader/dyna/RelationshipField.java
index b31e2fac..8392261c 100644
--- a/src/main/java/com/salesforce/dataloader/dyna/RelationshipField.java
+++ b/src/main/java/com/salesforce/dataloader/dyna/RelationshipField.java
@@ -49,7 +49,7 @@ public class RelationshipField {
     // new format to support polymorphic lookup relationship - 
     //      <parent object name>:<relationship name attribute of relationship field>.<idLookup field of parent sObject>
     // Example - "Account:Owner.username"
-    private static final String NEW_FORMAT_PARENT_IDLOOKUP_FIELD_SEPARATOR_CHAR = " - ";
+    private static final String NEW_FORMAT_PARENT_IDLOOKUP_FIELD_SEPARATOR_CHAR = "-";
     private static final String NEW_FORMAT_RELATIONSHIP_NAME_SEPARATOR_CHAR = ":";
     
     public RelationshipField(String parentObjectName, String relationshipName) {