diff --git a/app/models/solr_document.rb b/app/models/solr_document.rb
index 32a896cf..cbcf60e8 100644
--- a/app/models/solr_document.rb
+++ b/app/models/solr_document.rb
@@ -43,11 +43,13 @@ def extents_information
       physdesc_facet
     ].compact.join(", ")
 
-    if quantity_unittype.blank?
+    extent_info = if quantity_unittype.blank?
       dimensions_facet
     else
       [quantity_unittype, dimensions_facet].compact.join(", ")
     end
+
+    extent_info.presence
   end
 
   def extract_notes_by_header(header)
diff --git a/spec/models/solr_document_spec.rb b/spec/models/solr_document_spec.rb
index 4e5ef44c..4a3af88f 100644
--- a/spec/models/solr_document_spec.rb
+++ b/spec/models/solr_document_spec.rb
@@ -108,8 +108,8 @@
         document.extents_information
       end
 
-      it "returns an empty string" do
-        expect(extents_information_value).to eq ""
+      it "returns nil" do
+        expect(extents_information_value).to be_nil
       end
     end
   end