diff --git a/src/main/java/com/mrcrayfish/framework/network/Network.java b/src/main/java/com/mrcrayfish/framework/network/Network.java
index 8ed5b682..7e0f82ef 100644
--- a/src/main/java/com/mrcrayfish/framework/network/Network.java
+++ b/src/main/java/com/mrcrayfish/framework/network/Network.java
@@ -54,7 +54,7 @@ public static SimpleChannel getPlayChannel()
          return PLAY_CHANNEL;
     }
 
-    public static void registerLoginData(ResourceLocation id, Supplier<? extends ILoginData> data)
+    public synchronized static void registerLoginData(ResourceLocation id, Supplier<? extends ILoginData> data)
     {
         if(Framework.isGameLoaded())
         {