diff --git a/src/libcore/intrinsics.rs b/src/libcore/intrinsics.rs
index 659b7a23ed922..823678ec88020 100644
--- a/src/libcore/intrinsics.rs
+++ b/src/libcore/intrinsics.rs
@@ -1159,7 +1159,7 @@ extern "rust-intrinsic" {
     /// // At this point, using or dropping `v` results in undefined behavior.
     /// // drop(v); // ERROR
     ///
-    /// // Even leaking `v` "uses" it, and henc eis undefined behavior.
+    /// // Even leaking `v` "uses" it, and hence is undefined behavior.
     /// // mem::forget(v); // ERROR
     ///
     /// unsafe {
diff --git a/src/libcore/ptr.rs b/src/libcore/ptr.rs
index 5c16c8acae596..defe3d807faeb 100644
--- a/src/libcore/ptr.rs
+++ b/src/libcore/ptr.rs
@@ -47,7 +47,7 @@
 //! ## Alignment
 //!
 //! Valid raw pointers as defined above are not necessarily properly aligned (where
-//! "proper" alignment is defind by the pointee type, i.e., `*const T` must be
+//! "proper" alignment is defined by the pointee type, i.e., `*const T` must be
 //! aligned to `mem::align_of::<T>()`). However, most functions require their
 //! arguments to be properly aligned, and will explicitly state
 //! this requirement in their documentation. Notable exceptions to this are