diff --git a/lib/galaxy/datatypes/binary.py b/lib/galaxy/datatypes/binary.py
index b3eccfaf8b3..6aaef2f2544 100644
--- a/lib/galaxy/datatypes/binary.py
+++ b/lib/galaxy/datatypes/binary.py
@@ -22,7 +22,9 @@ from bx.seq.twobit import TWOBIT_MAGIC_NUMBER, TWOBIT_MAGIC_NUMBER_SWAP, TWOBIT_
 
 from galaxy import util
 from galaxy.datatypes import metadata
-from galaxy.datatypes.data import DatatypeValidation, get_file_peek
+from galaxy.datatypes.data import (
+    DatatypeValidation,
+    get_file_peek,
 from galaxy.datatypes.metadata import DictParameter, ListParameter, MetadataElement, MetadataParameter
 from galaxy.util import nice_size, sqlite
 from galaxy.util.checkers import is_bz2, is_gzip
diff --git a/lib/galaxy/datatypes/genetics.py b/lib/galaxy/datatypes/genetics.py
index c6955d1a2c5..ab57652746e 100644
--- a/lib/galaxy/datatypes/genetics.py
+++ b/lib/galaxy/datatypes/genetics.py
@@ -20,7 +20,10 @@ from markupsafe import escape
 from six.moves.urllib.parse import quote_plus
 
 from galaxy.datatypes import metadata
-from galaxy.datatypes.data import DatatypeValidation, Text
+from galaxy.datatypes.data import (
+    DatatypeValidation,
+    Text,
+)
 from galaxy.datatypes.metadata import MetadataElement
 from galaxy.datatypes.sniff import build_sniff_from_prefix
 from galaxy.datatypes.tabular import Tabular
diff --git a/lib/galaxy/datatypes/interval.py b/lib/galaxy/datatypes/interval.py
index a541757566e..0013823bbc1 100644
--- a/lib/galaxy/datatypes/interval.py
+++ b/lib/galaxy/datatypes/interval.py
@@ -286,7 +286,7 @@ class Interval(Tabular):
                 try:
                     next(reader)
                 except ParseError as e:
-                    return DatatypeValidation.invalid(str(e))
+                    return DatatypeValidation.invalid(unicodify(e))
                 except StopIteration:
                     return DatatypeValidation.valid()
 
diff --git a/lib/galaxy/jobs/actions/post.py b/lib/galaxy/jobs/actions/post.py
index 1f84e0fc544..71230fe2dfb 100644
--- a/lib/galaxy/jobs/actions/post.py
+++ b/lib/galaxy/jobs/actions/post.py
@@ -70,7 +70,7 @@ class EmailAction(DefaultJobAction):
 
 class ValidateOutputsAction(DefaultJobAction):
     """
-    This action sends an email to the galaxy user responsible for a job.
+    This action validates the produced outputs against the expected datatype.
     """
     name = "ValidateOutputsAction"
     verbose_name = "Validate Tool Outputs"