diff --git a/src/node/waku_message.py b/src/node/waku_message.py
index 5b7e2311..f0737b09 100644
--- a/src/node/waku_message.py
+++ b/src/node/waku_message.py
@@ -13,7 +13,7 @@ class MessageRpcResponse:
     timestamp: Optional[int]
     ephemeral: Optional[bool]
     meta: Optional[str]
-    rateLimitProof: Optional[str] = field(default_factory=dict)
+    proof: Optional[str] = field(default_factory=dict)
     rate_limit_proof: Optional[dict] = field(default_factory=dict)