diff --git a/constance/admin.py b/constance/admin.py
index 276986b..94ac72b 100644
--- a/constance/admin.py
+++ b/constance/admin.py
@@ -109,7 +109,7 @@ class ConstanceForm(forms.Form):
     def clean_version(self):
         value = self.cleaned_data['version']
 
-        if settings.CONSTANCE_IGNORE_ADMIN_VERSION_CHECK:
+        if settings.IGNORE_ADMIN_VERSION_CHECK:
             return value
 
         if value != self.initial['version']: