diff --git a/ShadowLibrary/Core.hs b/ShadowLibrary/Core.hs
index 678df33..e43adbc 100644
--- a/ShadowLibrary/Core.hs
+++ b/ShadowLibrary/Core.hs
@@ -93,7 +93,7 @@ data ShadowItem = ShadowItem {
   url :: Maybe String,
   title :: String,
   itype :: String,
-  originalDate :: Maybe String,
+  originalDate :: String,
   creator :: Maybe String,
   format :: Maybe String,
   lang :: Maybe String,
@@ -105,7 +105,7 @@ defaultShadowItem url title = ShadowItem {
   url = Just url,
   title = title,
   itype = "periodical",
-  originalDate = Nothing,
+  originalDate = "",
   creator = Nothing,
   format = Just "pdf",
   lang = Just "pol",