diff --git a/ckanext/qdes_schema/qdes_ckan_dataset.json b/ckanext/qdes_schema/qdes_ckan_dataset.json
index cbbd6b8b..fb470b95 100644
--- a/ckanext/qdes_schema/qdes_ckan_dataset.json
+++ b/ckanext/qdes_schema/qdes_ckan_dataset.json
@@ -91,7 +91,7 @@
     },
     {
       "field_name": "temporal_start",
-      "label": "Start",
+      "label": "Temporal coverage start",
       "display_property": "dcat:startDate",
       "preset": "date",
       "validators": "qdes_temporal_start_end_date",
@@ -100,7 +100,7 @@
     },
     {
       "field_name": "temporal_end",
-      "label": "End",
+      "label": "Temporal coverage end",
       "display_property": "dcat:endDate",
       "preset": "date",
       "validators": "qdes_temporal_start_end_date",
diff --git a/ckanext/qdes_schema/validators.py b/ckanext/qdes_schema/validators.py
index f0873367..eafe46ed 100644
--- a/ckanext/qdes_schema/validators.py
+++ b/ckanext/qdes_schema/validators.py
@@ -18,6 +18,6 @@ def qdes_temporal_start_end_date(key, flattened_data, errors, context):
     if (len(temporal_start_value) > 0) and (len(temporal_end_value) > 0):
         if dt.strptime(temporal_start_value, '%Y-%m-%d') > dt.strptime(temporal_end_value, '%Y-%m-%d'):
             if key == ('temporal_start',):
-                raise toolkit.Invalid("Start date must be less then end date.")
+                raise toolkit.Invalid("Must be earlier than end date.")
             elif key == ('temporal_end',):
-                raise toolkit.Invalid("End date must be higher then start date.")
+                raise toolkit.Invalid("Must be later than start date.")