diff --git a/Content.Client/EntryPoint.cs b/Content.Client/EntryPoint.cs
index 4eab611fc2..37c5385595 100644
--- a/Content.Client/EntryPoint.cs
+++ b/Content.Client/EntryPoint.cs
@@ -80,9 +80,9 @@ namespace Content.Client
 
             ClientContentIoC.Register();
 
-            if (TestingCallbacks != null)
+            foreach (var callback in TestingCallbacks)
             {
-                var cast = (ClientModuleTestingCallbacks) TestingCallbacks;
+                var cast = (ClientModuleTestingCallbacks) callback;
                 cast.ClientBeforeIoC?.Invoke();
             }
 
diff --git a/Content.IntegrationTests/ContentIntegrationTest.cs b/Content.IntegrationTests/ContentIntegrationTest.cs
index 85184d6f65..d4172e53d2 100644
--- a/Content.IntegrationTests/ContentIntegrationTest.cs
+++ b/Content.IntegrationTests/ContentIntegrationTest.cs
@@ -57,6 +57,20 @@ namespace Content.IntegrationTests
             options ??= new ServerIntegrationOptions();
             options.ServerContentAssembly = typeof(Server.EntryPoint).Assembly;
             options.SharedContentAssembly = typeof(Shared.EntryPoint).Assembly;
+            options.BeforeStart += () =>
+            {
+                IoCManager.Resolve<IModLoader>().SetModuleBaseCallbacks(new ServerModuleTestingCallbacks
+                {
+                    ServerBeforeIoC = () =>
+                    {
+                        if (options is ServerContentIntegrationOption contentOptions)
+                        {
+                            contentOptions.ContentBeforeIoC?.Invoke();
+                        }
+                    }
+                });
+            };
+
             return base.StartServer(options);
         }
 
@@ -69,11 +83,6 @@ namespace Content.IntegrationTests
                 {
                     ServerBeforeIoC = () =>
                     {
-                        if (options is ServerContentIntegrationOption contentOptions)
-                        {
-                            contentOptions.ContentBeforeIoC?.Invoke();
-                        }
-
                         IoCManager.Register<IGameTicker, DummyGameTicker>(true);
                     }
                 });
diff --git a/Content.Server/EntryPoint.cs b/Content.Server/EntryPoint.cs
index 9542e2b36a..77ce2ea747 100644
--- a/Content.Server/EntryPoint.cs
+++ b/Content.Server/EntryPoint.cs
@@ -40,9 +40,9 @@ namespace Content.Server
 
             ServerContentIoC.Register();
 
-            if (TestingCallbacks != null)
+            foreach (var callback in TestingCallbacks)
             {
-                var cast = (ServerModuleTestingCallbacks) TestingCallbacks;
+                var cast = (ServerModuleTestingCallbacks) callback;
                 cast.ServerBeforeIoC?.Invoke();
             }