diff --git a/metadator.py b/metadator.py
index c7e4a23..f880fb8 100644
--- a/metadator.py
+++ b/metadator.py
@@ -382,7 +382,10 @@ def format_publication_info(eoa_publication_info, server_data):
         pub_suffix = " " + eoa_publication_info["Publicationauthorsuffix"]
 
     licence_string = format_licence(eoa_publication_info["Publicationlicense"])
-    shoplink_string = format_shoplink(eoa_publication_info["Shoplink"])
+    if len(eoa_publication_info["Shoplink"]) == 0:
+        shoplink_string = ""
+    else:
+        shoplink_string = format_shoplink(eoa_publication_info["Shoplink"])
 
     if len(eoa_publication_info['Doipublication']) > 0:
         doi_string = f", DOI {eoa_publication_info['Doipublication']}"