diff --git a/src/guide/send_onchain.md b/src/guide/send_onchain.md
index 82b4903..7e8370e 100644
--- a/src/guide/send_onchain.md
+++ b/src/guide/send_onchain.md
@@ -1,4 +1,4 @@
-# Sending an On-Chain Transaction (Swap-Out)
+# Sending an on-chain transaction (Swap-Out)
 
 You can send funds from the Breez SDK wallet to an on-chain address as follows.