diff --git a/src/main/java/net/minecraftforge/fml/common/registry/EntityEntryBuilder.java b/src/main/java/net/minecraftforge/fml/common/registry/EntityEntryBuilder.java
index 0b191a269..320defea9 100644
--- a/src/main/java/net/minecraftforge/fml/common/registry/EntityEntryBuilder.java
+++ b/src/main/java/net/minecraftforge/fml/common/registry/EntityEntryBuilder.java
@@ -108,7 +108,9 @@ public final EntityEntryBuilder<E> entity(@Nonnull final Class<? extends E> enti
     }
 
     /**
-     * Sets the factory of the entity.
+     * Sets the factory of the entity. Used for the client-side sync.
+     *  Here, we just construct an instance. Datas will be passed elsewhere.
+     *  {@see IEntityAdditionalSpawnData}
      *
      * @param factory The entity factory
      * @return This builder
diff --git a/src/main/java/net/minecraftforge/fml/common/registry/EntityRegistry.java b/src/main/java/net/minecraftforge/fml/common/registry/EntityRegistry.java
index 8ba7a978c..660323cc7 100644
--- a/src/main/java/net/minecraftforge/fml/common/registry/EntityRegistry.java
+++ b/src/main/java/net/minecraftforge/fml/common/registry/EntityRegistry.java
@@ -167,7 +167,10 @@ private EntityRegistry()
      * @param trackingRange The range at which MC will send tracking updates
      * @param updateFrequency The frequency of tracking updates
      * @param sendsVelocityUpdates Whether to send velocity information packets as well
+     * <p>
+     * @deprecated subscribe {@link net.minecraftforge.event.RegistryEvent.Register<EntityEntry>} instead.
      */
+    @Deprecated
     public static void registerModEntity(ResourceLocation registryName, Class<? extends Entity> entityClass, String entityName, int id, Object mod, int trackingRange, int updateFrequency, boolean sendsVelocityUpdates)
     {
         instance().doModEntityRegistration(registryName, entityClass, entityName, id, mod, trackingRange, updateFrequency, sendsVelocityUpdates);
@@ -186,7 +189,10 @@ public static void registerModEntity(ResourceLocation registryName, Class<? exte
      * @param sendsVelocityUpdates Whether to send velocity information packets as well
      * @param eggPrimary Primary egg color
      * @param eggSecondary Secondary egg color
+     * <p>
+     * @deprecated subscribe {@link net.minecraftforge.event.RegistryEvent.Register<EntityEntry>} instead.
      */
+    @Deprecated
     public static void registerModEntity(ResourceLocation registryName, Class<? extends Entity> entityClass, String entityName, int id, Object mod, int trackingRange, int updateFrequency, boolean sendsVelocityUpdates, int eggPrimary, int eggSecondary)
     {
         instance().doModEntityRegistration(registryName, entityClass, entityName, id, mod, trackingRange, updateFrequency, sendsVelocityUpdates);