diff --git a/lib/galaxy/tools/__init__.py b/lib/galaxy/tools/__init__.py
index 8c9ab61ffd5..1c7c56c20fa 100755
--- a/lib/galaxy/tools/__init__.py
+++ b/lib/galaxy/tools/__init__.py
@@ -1538,6 +1538,8 @@ class Tool( object, Dictifiable ):
                         group_errors[-1] = { '__index__': 'Cannot add repeat (max size=%i).' % input.max }
                         any_group_errors = True
                     rep_index += 1
+                if any_group_errors:
+                    errors[ input.name ] = group_errors
             elif isinstance( input, Conditional ):
                 group_state = state[input.name]
                 group_prefix = "%s|" % ( key )