diff --git a/poem-openapi/src/types/string_types.rs b/poem-openapi/src/types/string_types.rs
index 436d29dc39..9c12e974dc 100644
--- a/poem-openapi/src/types/string_types.rs
+++ b/poem-openapi/src/types/string_types.rs
@@ -126,7 +126,7 @@ impl_string_types!(
 
 #[cfg(feature = "hostname")]
 impl_string_types!(
-    /// A email address type.
+    /// A hostname type.
     #[cfg_attr(docsrs, doc(cfg(feature = "hostname")))]
     Hostname,
     "string",