diff --git a/app/models/instance_configuration.rb b/app/models/instance_configuration.rb
index 11289887e00..a9b1962f24c 100644
--- a/app/models/instance_configuration.rb
+++ b/app/models/instance_configuration.rb
@@ -39,7 +39,7 @@ class InstanceConfiguration
   def gitlab_ci
     Settings.gitlab_ci
             .to_h
-            .merge(artifacts_max_size: { value: Settings.artifacts.max_size&.megabytes,
+            .merge(artifacts_max_size: { value: Gitlab::CurrentSettings.max_artifacts_size.megabytes,
                                          default: 100.megabytes })
   end
 
diff --git a/changelogs/unreleased/instance-configuration-artifact-size.yml b/changelogs/unreleased/instance-configuration-artifact-size.yml
new file mode 100644
index 00000000000..077f8631af5
--- /dev/null
+++ b/changelogs/unreleased/instance-configuration-artifact-size.yml
@@ -0,0 +1,5 @@
+---
+title: Display maximum artifact size from runtime config
+merge_request: 26784
+author: Bastian Blank
+type: fixed
diff --git a/spec/models/instance_configuration_spec.rb b/spec/models/instance_configuration_spec.rb
index e65f97df3c3..43954511858 100644
--- a/spec/models/instance_configuration_spec.rb
+++ b/spec/models/instance_configuration_spec.rb
@@ -82,6 +82,13 @@ describe InstanceConfiguration do
         it 'returns the key artifacts_max_size' do
           expect(gitlab_ci.keys).to include(:artifacts_max_size)
         end
+
+        it 'returns the key artifacts_max_size with values' do
+          stub_application_setting(max_artifacts_size: 200)
+
+          expect(gitlab_ci[:artifacts_max_size][:default]).to eq(100.megabytes)
+          expect(gitlab_ci[:artifacts_max_size][:value]).to eq(200.megabytes)
+        end
       end
     end
   end