diff --git a/src/registrar/views/domain.py b/src/registrar/views/domain.py
index 9a0e2ea68..3aa7cc9df 100644
--- a/src/registrar/views/domain.py
+++ b/src/registrar/views/domain.py
@@ -253,7 +253,7 @@ class DomainNameserversView(DomainFormBaseView):
                 form.fields["server"].required = True
             else:
                 form.fields["server"].required = False
-                form.fields["server"].label += f" (optional)"
+                form.fields["server"].label += " (optional)"
             form.fields["domain"].initial = self.object.name
         return formset