diff --git a/plasmid/source/core-plugins/weismigration/1/as/definitions.py b/plasmid/source/core-plugins/weismigration/1/as/definitions.py
index 2a69e895ed0bf9c3231e86619e2dd151fd25efd5..d912202a89545df8e943f044727a4bd50bdc04f8 100644
--- a/plasmid/source/core-plugins/weismigration/1/as/definitions.py
+++ b/plasmid/source/core-plugins/weismigration/1/as/definitions.py
@@ -132,7 +132,7 @@ oligoDefinition = [
     ["TEXT_SEQUENCE",                          "General",                  "TextSequence",                           DataType.VARCHAR,                      None, "", None, None, False],
     ["TONUC",                          "General",                  "toNuc",                           DataType.INTEGER,                      None, "", None, None, False],
     ["TYPE",                          "General",                  "Type",                           DataType.CONTROLLEDVOCABULARY,                      "OLIGO_TYPE", "", None, None, False],
-    ["UC_NUMBER",                          "General",                  "UC Number",                           DataType.TEXT,                      None, "", None, None, False],
+    ["UC_NUMBER",                          "General",                  "UC Number",                           DataType.VARCHAR,                      None, "", None, None, False],
     ["UG_UL",                          "General",                  "ug_ul",                           DataType.REAL,                      None, "", None, None, False],
     ["VOLUME",                          "General",                  "Volume",                           DataType.REAL,                      None, "", None, None, False],
     ["STATUS_RECORDS",                          "General",                  "StatusRecords",                           DataType.INTEGER,                      None, "", None, None, False],