diff --git a/django/views/debug.py b/django/views/debug.py
index 21e7f72e6b..6bb6a0bd93 100644
--- a/django/views/debug.py
+++ b/django/views/debug.py
@@ -91,16 +91,18 @@ class ExceptionReporter:
                     module = import_module(loader.__module__)
                     if hasattr(loader, '__class__'):
                         source_list_func = loader.get_template_sources
-                        loader_name = loader.__module__ + '.' + loader.__class__.__name__
                     else: # NOTE: Remember to remove this branch when we deprecate old template loaders in 1.4
                         source_list_func = module.get_template_sources
-                        loader_name = loader.__module__ + '.' + loader.__name__
                     # NOTE: This assumes exc_value is the name of the template that
                     # the loader attempted to load.
                     template_list = [{'name': t, 'exists': os.path.exists(t)} \
                         for t in source_list_func(str(self.exc_value))]
                 except (ImportError, AttributeError):
                     template_list = []
+                if hasattr(loader, '__class__'):
+                    loader_name = loader.__module__ + '.' + loader.__class__.__name__
+                else: # NOTE: Remember to remove this branch when we deprecate old template loaders in 1.4
+                    loader_name = loader.__module__ + '.' + loader.__name__
                 self.loader_debug_info.append({
                     'loader': loader_name,
                     'templates': template_list,