diff --git a/src/doc/intro.md b/src/doc/intro.md
index cb28586d103e..0d5e547c8270 100644
--- a/src/doc/intro.md
+++ b/src/doc/intro.md
@@ -106,9 +106,9 @@ use semver::Version;
 
 fn main() {
     assert!(Version::parse("1.2.3") == Ok(Version {
-        major: 1u,
-        minor: 2u,
-        patch: 3u,
+        major: 1u64,
+        minor: 2u64,
+        patch: 3u64,
         pre: vec!(),
         build: vec!(),
     }));