diff --git a/gluon/sqlhtml.py b/gluon/sqlhtml.py
index 95e5f0ce..2e47e737 100644
--- a/gluon/sqlhtml.py
+++ b/gluon/sqlhtml.py
@@ -677,7 +677,7 @@ class AutocompleteWidget(object):
     def callback(self):
         if self.keyword in self.request.vars:
             field = self.fields[0]
-            if type(field) is FieldVirtual:
+            if type(field) is Field.Virtual:
                 records = []
                 table_rows = self.db(self.db[field.tablename]).select(orderby=self.orderby)
                 count = 0
@@ -741,7 +741,7 @@ class AutocompleteWidget(object):
                 del attr['requires']
             attr['_name'] = key2
             value = attr['value']
-            if type(self.fields[0]) is FieldVirtual:
+            if type(self.fields[0]) is Field.Virtual:
                 record = None
                 table_rows = self.db(self.db[self.fields[0].tablename]).select(orderby=self.orderby)
                 for row in table_rows: