diff --git a/Content.Tests/Server/GameObjects/Components/Mobs/ServerAlertsComponentTests.cs b/Content.Tests/Server/GameObjects/Components/Mobs/ServerAlertsComponentTests.cs
index 09c2fa63a6..6fbcebad97 100644
--- a/Content.Tests/Server/GameObjects/Components/Mobs/ServerAlertsComponentTests.cs
+++ b/Content.Tests/Server/GameObjects/Components/Mobs/ServerAlertsComponentTests.cs
@@ -36,6 +36,7 @@ namespace Content.Tests.Server.GameObjects.Components.Mobs
 
             IoCManager.Resolve<ISerializationManager>().Initialize();
             var prototypeManager = IoCManager.Resolve<IPrototypeManager>();
+            prototypeManager.Initialize();
             var factory = IoCManager.Resolve<IComponentFactory>();
             factory.RegisterClass<ServerAlertsComponent>();
             prototypeManager.LoadFromStream(new StringReader(PROTOTYPES));
diff --git a/Content.Tests/Server/Preferences/ServerDbSqliteTests.cs b/Content.Tests/Server/Preferences/ServerDbSqliteTests.cs
index 9fd5906a1f..5c7112cb34 100644
--- a/Content.Tests/Server/Preferences/ServerDbSqliteTests.cs
+++ b/Content.Tests/Server/Preferences/ServerDbSqliteTests.cs
@@ -99,7 +99,9 @@ namespace Content.Tests.Server.Preferences
             var db = GetDb();
             var username = new NetUserId(new Guid("640bd619-fc8d-4fe2-bf3c-4a5fb17d6ddd"));
             IoCManager.Resolve<ISerializationManager>().Initialize();
-            IoCManager.Resolve<IPrototypeManager>().LoadFromStream(new StringReader(Prototypes));
+            var prototypeManager = IoCManager.Resolve<IPrototypeManager>();
+            prototypeManager.Initialize();
+            prototypeManager.LoadFromStream(new StringReader(Prototypes));
             await db.InitPrefsAsync(username, HumanoidCharacterProfile.Default());
             await db.SaveCharacterSlotAsync(username, CharlieCharlieson(), 1);
             await db.SaveSelectedCharacterIndexAsync(username, 1);
diff --git a/Content.Tests/Shared/Alert/AlertManagerTests.cs b/Content.Tests/Shared/Alert/AlertManagerTests.cs
index 9f24c9a74a..c56e12c588 100644
--- a/Content.Tests/Shared/Alert/AlertManagerTests.cs
+++ b/Content.Tests/Shared/Alert/AlertManagerTests.cs
@@ -28,6 +28,7 @@ namespace Content.Tests.Shared.Alert
         {
             IoCManager.Resolve<ISerializationManager>().Initialize();
             var prototypeManager = IoCManager.Resolve<IPrototypeManager>();
+            prototypeManager.Initialize();
             prototypeManager.LoadFromStream(new StringReader(PROTOTYPES));
             var alertManager = IoCManager.Resolve<AlertManager>();
             alertManager.Initialize();
diff --git a/Content.Tests/Shared/Alert/AlertOrderPrototypeTests.cs b/Content.Tests/Shared/Alert/AlertOrderPrototypeTests.cs
index a2dbb052b3..6ebb979133 100644
--- a/Content.Tests/Shared/Alert/AlertOrderPrototypeTests.cs
+++ b/Content.Tests/Shared/Alert/AlertOrderPrototypeTests.cs
@@ -76,6 +76,7 @@ namespace Content.Tests.Shared.Alert
         {
             IoCManager.Resolve<ISerializationManager>().Initialize();
             var prototypeManager = IoCManager.Resolve<IPrototypeManager>();
+            prototypeManager.Initialize();
             prototypeManager.LoadFromStream(new StringReader(PROTOTYPES));
             prototypeManager.Resync();
 
diff --git a/Content.Tests/Shared/Utility/RandomExtensionsTests.cs b/Content.Tests/Shared/Utility/RandomExtensionsTests.cs
index 6dff935a15..e27cc556f7 100644
--- a/Content.Tests/Shared/Utility/RandomExtensionsTests.cs
+++ b/Content.Tests/Shared/Utility/RandomExtensionsTests.cs
@@ -26,6 +26,7 @@ namespace Content.Tests.Shared.Utility
         {
             IoCManager.Resolve<ISerializationManager>().Initialize();
             var prototypeManager = IoCManager.Resolve<IPrototypeManager>();
+            prototypeManager.Initialize();
 
             prototypeManager.LoadFromStream(new StringReader(Prototypes));