diff --git a/prediction_market_agent/agents/microchain_agent/nft_treasury_game/app_nft_treasury_game.py b/prediction_market_agent/agents/microchain_agent/nft_treasury_game/app_nft_treasury_game.py
index f3ab7efb..c85778df 100644
--- a/prediction_market_agent/agents/microchain_agent/nft_treasury_game/app_nft_treasury_game.py
+++ b/prediction_market_agent/agents/microchain_agent/nft_treasury_game/app_nft_treasury_game.py
@@ -89,7 +89,7 @@ def send_message_part(nft_agent: type[DeployableAgentNFTGameAbstract]) -> None:
         format="%0.5f",
     )
     message_compressed = HexBytes(compress_message(message)).hex() if message else ""
-    if st.button("Send message"):
+    if st.button("Send message", disabled=not message):
         send_message_via_wallet(
             recipient=nft_agent.wallet_address,
             message=message_compressed,