diff --git a/src/libcore/num/isize.rs b/src/libcore/num/isize.rs
index 0fd0d90b12501..2cdfe03eafe7f 100644
--- a/src/libcore/num/isize.rs
+++ b/src/libcore/num/isize.rs
@@ -9,10 +9,6 @@
 // except according to those terms.
 
 //! Operations and constants for pointer-sized signed integers (`isize` type)
-//!
-//! This type was recently added to replace `int`. The rollout of the
-//! new type will gradually take place over the alpha cycle along with
-//! the development of clearer conventions around integer types.
 
 #![stable(feature = "rust1", since = "1.0.0")]
 #![doc(primitive = "isize")]
diff --git a/src/libcore/num/usize.rs b/src/libcore/num/usize.rs
index 602ef4fe45e73..6fd23425e4d89 100644
--- a/src/libcore/num/usize.rs
+++ b/src/libcore/num/usize.rs
@@ -9,10 +9,6 @@
 // except according to those terms.
 
 //! Operations and constants for pointer-sized unsigned integers (`usize` type)
-//!
-//! This type was recently added to replace `uint`. The rollout of the
-//! new type will gradually take place over the alpha cycle along with
-//! the development of clearer conventions around integer types.
 
 #![stable(feature = "rust1", since = "1.0.0")]
 #![doc(primitive = "usize")]
diff --git a/src/libstd/num/isize.rs b/src/libstd/num/isize.rs
index 7fb2cd81ababf..aa89f858f6f63 100644
--- a/src/libstd/num/isize.rs
+++ b/src/libstd/num/isize.rs
@@ -9,10 +9,6 @@
 // except according to those terms.
 
 //! Operations and constants for pointer-sized signed integers (`isize` type)
-//!
-//! This type was recently added to replace `int`. The rollout of the
-//! new type will gradually take place over the alpha cycle along with
-//! the development of clearer conventions around integer types.
 
 #![stable(feature = "rust1", since = "1.0.0")]
 #![doc(primitive = "isize")]
diff --git a/src/libstd/num/usize.rs b/src/libstd/num/usize.rs
index 19964c306a79b..b54d8ae96c5cf 100644
--- a/src/libstd/num/usize.rs
+++ b/src/libstd/num/usize.rs
@@ -9,10 +9,6 @@
 // except according to those terms.
 
 //! Operations and constants for pointer-sized unsigned integers (`usize` type)
-//!
-//! This type was recently added to replace `uint`. The rollout of the
-//! new type will gradually take place over the alpha cycle along with
-//! the development of clearer conventions around integer types.
 
 #![stable(feature = "rust1", since = "1.0.0")]
 #![doc(primitive = "usize")]