diff --git a/django/core/formfields.py b/django/core/formfields.py
index facb2b57e2..167439cc07 100644
--- a/django/core/formfields.py
+++ b/django/core/formfields.py
@@ -210,7 +210,7 @@ class InlineObjectCollection:
         self.data = data
         self.errors = errors
         self._collections = None
-        self.name = rel_obj.opts.module_name
+        self.name = rel_obj.name
 
     def __len__(self):
         self.fill()