diff --git a/src/main/java/com/github/minecraftschurlimods/codeclib/CodecDataManager.java b/src/main/java/com/github/minecraftschurlimods/codeclib/CodecDataManager.java
index 047194a..a794ba3 100644
--- a/src/main/java/com/github/minecraftschurlimods/codeclib/CodecDataManager.java
+++ b/src/main/java/com/github/minecraftschurlimods/codeclib/CodecDataManager.java
@@ -233,6 +233,7 @@ protected final void apply(Map<ResourceLocation, JsonElement> dataIn, ResourceMa
     }
 
     protected void receiveSyncedData(Map<ResourceLocation, T> data) {
+        if (this.data == data || data == null) return;
         if (this.data == null) {
             this.data = data;
         } else {