diff --git a/formtools/wizard/storage/base.py b/formtools/wizard/storage/base.py
index 6c155e0..2f73e76 100644
--- a/formtools/wizard/storage/base.py
+++ b/formtools/wizard/storage/base.py
@@ -70,8 +70,8 @@ class BaseStorage(object):
 
         if wizard_files and not self.file_storage:
             raise NoFileStorageConfigured(
-                    "You need to define 'file_storage' in your "
-                    "wizard view in order to handle file uploads.")
+                "You need to define 'file_storage' in your "
+                "wizard view in order to handle file uploads.")
 
         files = {}
         for field, field_dict in six.iteritems(wizard_files):
@@ -84,8 +84,8 @@ class BaseStorage(object):
     def set_step_files(self, step, files):
         if files and not self.file_storage:
             raise NoFileStorageConfigured(
-                    "You need to define 'file_storage' in your "
-                    "wizard view in order to handle file uploads.")
+                "You need to define 'file_storage' in your "
+                "wizard view in order to handle file uploads.")
 
         if step not in self.data[self.step_files_key]:
             self.data[self.step_files_key][step] = {}
diff --git a/formtools/wizard/views.py b/formtools/wizard/views.py
index a23a56a..f1c54f5 100644
--- a/formtools/wizard/views.py
+++ b/formtools/wizard/views.py
@@ -184,8 +184,8 @@ class WizardView(TemplateView):
                 if (isinstance(field, forms.FileField) and
                         not hasattr(cls, 'file_storage')):
                     raise NoFileStorageConfigured(
-                            "You need to define 'file_storage' in your "
-                            "wizard view in order to handle file uploads.")
+                        "You need to define 'file_storage' in your "
+                        "wizard view in order to handle file uploads.")
 
         # build the kwargs for the wizardview instances
         kwargs['form_list'] = computed_form_list