diff --git a/netbox/dcim/admin.py b/netbox/dcim/admin.py
index 65d0e3954..4f9f8319d 100644
--- a/netbox/dcim/admin.py
+++ b/netbox/dcim/admin.py
@@ -146,6 +146,7 @@ class InterfaceAdmin(admin.TabularInline):
 
 class ModuleAdmin(admin.TabularInline):
     model = Module
+    readonly_fields = ['parent']
 
 
 @admin.register(Device)