diff --git a/app/lib/activitypub/activity/create.rb b/app/lib/activitypub/activity/create.rb
index 2cc6be4d75..7febce7645 100644
--- a/app/lib/activitypub/activity/create.rb
+++ b/app/lib/activitypub/activity/create.rb
@@ -534,9 +534,9 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
 
   def misskey_software?
     info = instance_info
-    return DomainBlock.detect_invalid_subscription?(@account.domain) if info.nil?
+    return false if info.nil?
 
-    %w(misskey calckey firefish).include?(info.software) || DomainBlock.detect_invalid_subscription?(@account.domain)
+    %w(misskey calckey firefish).include?(info.software)
   end
 
   def misskey_searchability
diff --git a/app/services/activitypub/process_account_service.rb b/app/services/activitypub/process_account_service.rb
index c155015d7a..24a68a8c21 100644
--- a/app/services/activitypub/process_account_service.rb
+++ b/app/services/activitypub/process_account_service.rb
@@ -299,9 +299,9 @@ class ActivityPub::ProcessAccountService < BaseService
 
   def misskey_software?
     info = instance_info
-    return domain_block&.detect_invalid_subscription if info.nil?
+    return false if info.nil?
 
-    %w(misskey calckey firefish).include?(info.software) || domain_block&.detect_invalid_subscription
+    %w(misskey calckey firefish).include?(info.software)
   end
 
   def subscribable_by