diff --git a/app/uploaders/zizia/csv_manifest_validator.rb b/app/uploaders/zizia/csv_manifest_validator.rb
index bf73f0a..c5ee77a 100644
--- a/app/uploaders/zizia/csv_manifest_validator.rb
+++ b/app/uploaders/zizia/csv_manifest_validator.rb
@@ -72,13 +72,18 @@ def missing_headers
     end
 
     def required_headers(object_type = "w")
+      return work_headers if object_type.nil?
       if object_type.casecmp("c").zero? || object_type.casecmp("collection").zero?
         ['title', 'visibility']
       else
-        ['title', 'creator', 'keyword', 'rights statement', 'visibility', 'files', 'deduplication_key']
+        work_headers
       end
     end
 
+    def work_headers
+      ['title', 'creator', 'keyword', 'rights statement', 'visibility', 'files', 'deduplication_key']
+    end
+
     def duplicate_headers
       duplicates = []
       sorted_headers = @transformed_headers.sort
diff --git a/spec/dummy/spec/fixtures/csv_import/good/mix_of_object_types.csv b/spec/dummy/spec/fixtures/csv_import/good/mix_of_object_types.csv
index df7a1d0..0661f6c 100644
--- a/spec/dummy/spec/fixtures/csv_import/good/mix_of_object_types.csv
+++ b/spec/dummy/spec/fixtures/csv_import/good/mix_of_object_types.csv
@@ -4,3 +4,4 @@ Collection,Collection of fruits,,,,public,,def/234
 w,Work on tomatoes,"Tomato, Tommy",fruits|~|tomatoes,http://rightsstatements.org/vocab/InC/1.0/,public,birds.jpg,abc/123
 wOrk,Work on cabbages,"Cabbage, Carl",vegetables|~|cabbages,http://rightsstatements.org/vocab/InC/1.0/,public,dog.jpg,abs/234
 coLLEction,Collection of legumes,,,,public,,def/345
+,Work without object type,"Cabbage, Carl",vegetables|~|cabbages,http://rightsstatements.org/vocab/InC/1.0/,public,dog.jpg,abc/345