diff --git a/Source/DataLayer/EfClasses/Book.cs b/Source/DataLayer/EfClasses/Book.cs
index 11aedf1d..8de17cb8 100644
--- a/Source/DataLayer/EfClasses/Book.cs
+++ b/Source/DataLayer/EfClasses/Book.cs
@@ -241,7 +241,7 @@ namespace DataLayer
         {
             // don't overwrite with default values
             IsAbridged |= isAbridged;
-            IsSpatial |= isSpatial ?? false;
+            IsSpatial = isSpatial ?? IsSpatial;
             DatePublished = datePublished ?? DatePublished;
             Language = language?.FirstCharToUpper() ?? Language;
         }