diff --git a/src/main/java/org/hmcore/HMCore.java b/src/main/java/org/hmcore/HMCore.java
index 457628d..4c01881 100644
--- a/src/main/java/org/hmcore/HMCore.java
+++ b/src/main/java/org/hmcore/HMCore.java
@@ -6,7 +6,7 @@ import java.util.HashMap;
 
 public class HMCore {
 
-    public static HashMap<String, Module<?, ?>> modules = new HashMap<>();
+    public static final HashMap<String, Module<?, ?>> modules = new HashMap<>();
 
     public static void callAllModuleRegistries() {
         modules.forEach((name, module) -> module.registerObjects());