diff --git a/src/main/groovy/au/org/ala/profile/hub/Utils.groovy b/src/main/groovy/au/org/ala/profile/hub/Utils.groovy
index fe52d6ad..cfead251 100644
--- a/src/main/groovy/au/org/ala/profile/hub/Utils.groovy
+++ b/src/main/groovy/au/org/ala/profile/hub/Utils.groovy
@@ -63,6 +63,7 @@ class Utils {
                 result = 'application/octet-stream'
             }
         }
+        return result
     }
 
     static String getExtension(String fileName) {