diff --git a/src/libstd/time/duration.rs b/src/libstd/time/duration.rs
index bb30d0d80bdf..f01a27c84c11 100644
--- a/src/libstd/time/duration.rs
+++ b/src/libstd/time/duration.rs
@@ -114,9 +114,9 @@ impl Duration {
     #[inline]
     pub const fn from_millis(millis: u64) -> Duration {
         Duration {
-		secs: millis / MILLIS_PER_SEC,
-		nanos: ((millis % MILLIS_PER_SEC) as u32) * NANOS_PER_MILLI,
-	}
+            secs: millis / MILLIS_PER_SEC,
+            nanos: ((millis % MILLIS_PER_SEC) as u32) * NANOS_PER_MILLI,
+        }
     }
 
     /// Creates a new `Duration` from the specified number of microseconds.
@@ -136,9 +136,9 @@ impl Duration {
     #[inline]
     pub const fn from_micros(micros: u64) -> Duration {
         Duration {
-		secs: micros / MICROS_PER_SEC,
-		nanos: ((micros % MICROS_PER_SEC) as u32) * NANOS_PER_MICRO,
-	}
+            secs: micros / MICROS_PER_SEC,
+            nanos: ((micros % MICROS_PER_SEC) as u32) * NANOS_PER_MICRO,
+        }
     }
 
     /// Creates a new `Duration` from the specified number of nanoseconds.
@@ -158,9 +158,9 @@ impl Duration {
     #[inline]
     pub const fn from_nanos(nanos: u64) -> Duration {
         Duration {
-		secs: nanos / (NANOS_PER_SEC as u64),
-		nanos: (nanos % (NANOS_PER_SEC as u64)) as u32,
-	}
+            secs: nanos / (NANOS_PER_SEC as u64),
+            nanos: (nanos % (NANOS_PER_SEC as u64)) as u32,
+        }
     }
 
     /// Returns the number of _whole_ seconds contained by this `Duration`.