diff --git a/DCLP/64/63850.xml b/DCLP/64/63850.xml
index 3c94725f8253..1fd7e8404df2 100644
--- a/DCLP/64/63850.xml
+++ b/DCLP/64/63850.xml
@@ -169,7 +169,7 @@
 </ab></div>
          <div type="bibliography" subtype="principalEdition">
             <listBibl>
-               <bibl n="1" type="edition" subtype="principal">
+               <bibl n="1" type="publication" subtype="principal">
                   <title level="a" type="main">P. Mich. Inv. 2906, A Fragment of Logic.</title>
                   <!-- ignore - start, i.e. SoSOL users may not edit this -->
                   <!-- ignore - stop -->