diff --git a/gluon/dal.py b/gluon/dal.py
index 3312c724..f9799871 100644
--- a/gluon/dal.py
+++ b/gluon/dal.py
@@ -8545,7 +8545,7 @@ class Table(object):
                     __,fields[name] = new_fields[name]  #the value is the second element of the tuple
                     row = Row(fields)  #allow later compute fields to refer to this value
                 except (KeyError, AttributeError):
-                    # error sinlently unless field is required!
+                    # error silently unless field is required!
                     if ofield.required:
                         raise SyntaxError('unable to compute field: %s' % name)
         return new_fields.values()