diff --git a/Hebrew/Hebrew_A_6.xml b/Hebrew/Hebrew_A_6.xml
index 7d335c02..f828985c 100644
--- a/Hebrew/Hebrew_A_6.xml
+++ b/Hebrew/Hebrew_A_6.xml
@@ -106,7 +106,7 @@
                 <history>
                     
                     <origin>
-                        <origDate>Circa 17-18th Century.</origDate>
+                        <origDate calendar="Gregorian">Circa 17-18th Century.</origDate>
                     </origin>
                     
                     <acquisition>Purchased from Steven's 26.8.1930.</acquisition>