diff --git a/migration/lib/mets_manipulator.py b/migration/lib/mets_manipulator.py
index e05349e..1f660b6 100644
--- a/migration/lib/mets_manipulator.py
+++ b/migration/lib/mets_manipulator.py
@@ -197,6 +197,9 @@ def process_vocabulary_reference_by_value(self, node):
                     else:
                         search_field='Relationship type'
                         inverse_search_field='Reverse relationship'
+                else:
+                    search_field='Relationship type'
+                    inverse_search_field='Reverse relationship'
 
                 try:
                     # First, try to find the value in the correct column