diff --git a/src/guide/fiat_currencies.md b/src/guide/fiat_currencies.md
index 9ca434f..e41181e 100644
--- a/src/guide/fiat_currencies.md
+++ b/src/guide/fiat_currencies.md
@@ -1,4 +1,4 @@
-# Supporting Fiat Currencies
+# Supporting fiat currencies
 
 You can get the full details of supported fiat currencies, such as symbols and localized names: