diff --git a/plasmid/source/core-plugins/petermigration/1/dss/drop-boxes/petermigration/migration.py b/plasmid/source/core-plugins/petermigration/1/dss/drop-boxes/petermigration/migration.py
index d7674e43958ec7419a7475385f1f90071b317af2..c6d1290ec98fa998af945291d9de2952933d38e1 100644
--- a/plasmid/source/core-plugins/petermigration/1/dss/drop-boxes/petermigration/migration.py
+++ b/plasmid/source/core-plugins/petermigration/1/dss/drop-boxes/petermigration/migration.py
@@ -321,7 +321,7 @@ class AntibodyBoxOpenBISDTO(OpenBISDTO):
 class DocumentsAdaptor(FileMakerEntityAdaptor):
     
     def init(self):
-        self.selectQuery = "SELECT * FROM documents"
+        self.selectQuery = "SELECT CAST(file AS VARCHAR(1000)) AS file, info, id_nr, serial, \"date created\", \"date modified\" FROM documents"
         self.definition = definitions.documentDefinition
         FileMakerEntityAdaptor.init(self)