diff --git a/netbox/dcim/forms/model_forms.py b/netbox/dcim/forms/model_forms.py
index 23a12ff0e..007d10710 100644
--- a/netbox/dcim/forms/model_forms.py
+++ b/netbox/dcim/forms/model_forms.py
@@ -923,15 +923,6 @@ class MACAddressForm(NetBoxModelForm):
 
         super().__init__(*args, **kwargs)
 
-    def clean_is_primary(self):
-        # If setting this MACAddress to primary, unset all the rest on this interface
-        if is_primary := self.cleaned_data['is_primary']:
-            if interface := self.cleaned_data['interface']:
-                interface.mac_addresses.all().update(is_primary=False)
-            if vminterface := self.cleaned_data['vminterface']:
-                vminterface.mac_addresses.all().update(is_primary=False)
-        return is_primary
-
     def clean(self):
         super().clean()