diff --git a/src/main/java/io/github/crucible/bootstrap/CrucibleServerMainHook.java b/src/main/java/io/github/crucible/bootstrap/CrucibleServerMainHook.java
index 6441fdec..78782f23 100644
--- a/src/main/java/io/github/crucible/bootstrap/CrucibleServerMainHook.java
+++ b/src/main/java/io/github/crucible/bootstrap/CrucibleServerMainHook.java
@@ -106,6 +106,13 @@ public static void restoreStreams() {
 
     // Too lazy for a coremod
     public static void coremodHandleLaunch(File mcDir, LaunchClassLoader classLoader, FMLTweaker tweaker) {
+        try {
+            // Ensure some essential classes are loaded before we register the tweaker
+            Class.forName("io.github.crucible.CrucibleConfigs", true, classLoader);
+            Class.forName("io.github.crucible.CrucibleModContainer", true, classLoader);
+        } catch (ClassNotFoundException e) {
+            throw new RuntimeException(e);
+        }
         Lwjgl3ifyGlue.doCoremodWork(classLoader);
         classLoader.addClassLoaderExclusion("io.github.crucible.bootstrap.");
     }