diff --git a/app/models/user.rb b/app/models/user.rb
index 6e5db433f..7af90cdbe 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,7 +1,7 @@
 class User < ApplicationRecord
   include Verification
   attribute :registering_from_web, default: false
-  %i[newsletter email_digest email_on_direct_message recommended_debates
+  %i[newsletter email_digest email_on_direct_message public_activity recommended_debates
      recommended_proposals].each do |field|
     attribute field, :boolean, default: -> { !Setting["feature.gdpr.require_consent_for_notifications"] }
   end
diff --git a/db/migrate/20251009085528_remove_default_value_in_user_public_activity.rb b/db/migrate/20251009085528_remove_default_value_in_user_public_activity.rb
new file mode 100644
index 000000000..315be7a56
--- /dev/null
+++ b/db/migrate/20251009085528_remove_default_value_in_user_public_activity.rb
@@ -0,0 +1,7 @@
+class RemoveDefaultValueInUserPublicActivity < ActiveRecord::Migration[7.1]
+  def change
+    change_table :users do |t|
+      t.change_default :public_activity, from: true, to: nil
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index d74ea7a2e..f003810bc 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2025_10_09_085327) do
+ActiveRecord::Schema[7.1].define(version: 2025_10_09_085528) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_trgm"
   enable_extension "plpgsql"
@@ -1608,7 +1608,7 @@ ActiveRecord::Schema[7.1].define(version: 2025_10_09_085327) do
     t.datetime "level_two_verified_at", precision: nil
     t.string "erase_reason"
     t.datetime "erased_at", precision: nil
-    t.boolean "public_activity", default: true
+    t.boolean "public_activity"
     t.boolean "newsletter"
     t.integer "notifications_count", default: 0
     t.boolean "registering_with_oauth", default: false
diff --git a/spec/factories/users.rb b/spec/factories/users.rb
index d9b8789c5..cad4c8880 100644
--- a/spec/factories/users.rb
+++ b/spec/factories/users.rb
@@ -7,7 +7,6 @@ FactoryBot.define do
     terms_of_service    { "1" }
     confirmed_at        { Time.current }
     date_of_birth       { 20.years.ago }
-    public_activity     { true }
 
     trait :incomplete_verification do
       after :create do |user|
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 843f475d1..a986f556e 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -146,6 +146,20 @@ describe User do
       end
     end
 
+    describe "#public_activity" do
+      it "is true by default when the consent for notifications setting is disabled" do
+        Setting["feature.gdpr.require_consent_for_notifications"] = false
+
+        expect(build(:user).public_activity).to be true
+      end
+
+      it "is false by default when the consent for notifications setting is enabled" do
+        Setting["feature.gdpr.require_consent_for_notifications"] = true
+
+        expect(build(:user).public_activity).to be false
+      end
+    end
+
     describe "#recommended_debates" do
       it "is true by default when the consent for notifications setting is disabled" do
         Setting["feature.gdpr.require_consent_for_notifications"] = false