diff --git a/src/libstd/time/duration.rs b/src/libstd/time/duration.rs
index 15ddb62bab5c8635c39e8932da0056fd6b9c9f23..cb5bfb9176ec74b6f22825f9620e840249da8836 100644
--- a/src/libstd/time/duration.rs
+++ b/src/libstd/time/duration.rs
@@ -206,7 +206,7 @@ pub fn as_secs(&self) -> u64 { self.secs }
     ///
     /// let duration = Duration::from_millis(5432);
     /// assert_eq!(duration.as_secs(), 5);
-    /// assert_eq!(duration.subsec_nanos(), 432_000_000);
+    /// assert_eq!(duration.subsec_millis(), 432);
     /// ```
     #[unstable(feature = "duration_extras", issue = "46507")]
     #[inline]
@@ -226,7 +226,7 @@ pub fn subsec_millis(&self) -> u32 { self.nanos / NANOS_PER_MILLI }
     ///
     /// let duration = Duration::from_micros(1_234_567);
     /// assert_eq!(duration.as_secs(), 1);
-    /// assert_eq!(duration.subsec_nanos(), 234_567_000);
+    /// assert_eq!(duration.subsec_micros(), 234_567);
     /// ```
     #[unstable(feature = "duration_extras", issue = "46507")]
     #[inline]