3 files changed, 18 insertions, 18 deletions
diff --git a/src/libcore/num/f32.rs b/src/libcore/num/f32.rs
index 0d8e3044ecc..ae1b5f65eeb 100644
--- a/src/libcore/num/f32.rs
+++ b/src/libcore/num/f32.rs
@@ -281,7 +281,7 @@ impl Float for f32 {
 
     /// The fractional part of the number, satisfying:
     ///
-    /// ```rust
+    /// ```
     /// use core::num::Float;
     ///
     /// let x = 1.65f32;
diff --git a/src/libcore/num/f64.rs b/src/libcore/num/f64.rs
index d7e91058a46..4a73c1e8fcf 100644
--- a/src/libcore/num/f64.rs
+++ b/src/libcore/num/f64.rs
@@ -288,7 +288,7 @@ impl Float for f64 {
 
     /// The fractional part of the number, satisfying:
     ///
-    /// ```rust
+    /// ```
     /// use core::num::Float;
     ///
     /// let x = 1.65f64;
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index 4381b1fb3c9..a77f9709600 100644
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@@ -84,7 +84,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0b01001100u8;
@@ -99,7 +99,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0b01001100u8;
@@ -118,7 +118,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0b0101000u16;
@@ -134,7 +134,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0b0101000u16;
@@ -150,7 +150,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0x0123456789ABCDEFu64;
@@ -167,7 +167,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0x0123456789ABCDEFu64;
@@ -183,7 +183,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0x0123456789ABCDEFu64;
@@ -200,7 +200,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0x0123456789ABCDEFu64;
@@ -223,7 +223,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0x0123456789ABCDEFu64;
@@ -246,7 +246,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0x0123456789ABCDEFu64;
@@ -269,7 +269,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// let n = 0x0123456789ABCDEFu64;
@@ -291,7 +291,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// assert_eq!(5u16.checked_add(65530), Some(65535));
@@ -305,7 +305,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// assert_eq!((-127i8).checked_sub(1), Some(-128));
@@ -319,7 +319,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// assert_eq!(5u8.checked_mul(51), Some(255));
@@ -333,7 +333,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// assert_eq!((-127i8).checked_div(-1), Some(127));
@@ -371,7 +371,7 @@ pub trait Int
     ///
     /// # Examples
     ///
-    /// ```rust
+    /// ```
     /// use std::num::Int;
     ///
     /// assert_eq!(2.pow(4), 16);