diff --git a/src/lib.rs b/src/lib.rs
index 21f99df..cde4d7b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -79,6 +79,7 @@ impl IpNetwork {
     /// That means the `prefix` most significant bits will be 1 and the rest 0
     ///
     /// # Example
+    ///
     /// ```
     /// use ipnetwork::IpNetwork;
     /// use std::net::{Ipv4Addr, Ipv6Addr};
@@ -92,7 +93,7 @@ impl IpNetwork {
     /// assert_eq!(v6_net.mask(), Ipv6Addr::new(0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff));
     /// let v6_net: IpNetwork = "ff01::0/32".parse().unwrap();
     /// assert_eq!(v6_net.mask(), Ipv6Addr::new(0xffff, 0xffff, 0, 0, 0, 0, 0, 0));
-    ///```
+    /// ```
     pub fn mask(&self) -> IpAddr {
         match *self {
             IpNetwork::V4(ref a) => IpAddr::V4(a.mask()),