diff --git a/src/mat3.rs b/src/mat3.rs
index 6837e69..05b7ddf 100644
--- a/src/mat3.rs
+++ b/src/mat3.rs
@@ -1,7 +1,6 @@
 use core::cast::transmute;
 use core::cmp::Eq;
 use core::ptr::to_unsafe_ptr;
-use core::util::swap;
 use core::sys::size_of;
 use core::vec::raw::buf_as_slice;
 
diff --git a/src/mat4.rs b/src/mat4.rs
index 5ea6ba0..be0bdb3 100644
--- a/src/mat4.rs
+++ b/src/mat4.rs
@@ -1,7 +1,6 @@
 use core::cast::transmute;
 use core::cmp::Eq;
 use core::ptr::to_unsafe_ptr;
-use core::util::swap;
 use core::sys::size_of;
 use core::vec::raw::buf_as_slice;
 
diff --git a/src/vec2.rs b/src/vec2.rs
index 771a774..02efe4e 100644
--- a/src/vec2.rs
+++ b/src/vec2.rs
@@ -2,7 +2,6 @@ use core::cast::transmute;
 use core::cmp::{Eq, Ord};
 use core::ptr::to_unsafe_ptr;
 use core::sys::size_of;
-use core::util::swap;
 use core::vec::raw::buf_as_slice;
 
 use std::cmp::{FuzzyEq, FUZZY_EPSILON};
diff --git a/src/vec3.rs b/src/vec3.rs
index ac44969..42d898e 100644
--- a/src/vec3.rs
+++ b/src/vec3.rs
@@ -2,7 +2,6 @@ use core::cast::transmute;
 use core::cmp::{Eq, Ord};
 use core::ptr::to_unsafe_ptr;
 use core::sys::size_of;
-use core::util::swap;
 use core::vec::raw::buf_as_slice;
 
 use std::cmp::{FuzzyEq, FUZZY_EPSILON};
diff --git a/src/vec4.rs b/src/vec4.rs
index f9b5c4e..a183175 100644
--- a/src/vec4.rs
+++ b/src/vec4.rs
@@ -2,7 +2,6 @@ use core::cast::transmute;
 use core::cmp::{Eq, Ord};
 use core::ptr::to_unsafe_ptr;
 use core::sys::size_of;
-use core::util::swap;
 use core::vec::raw::buf_as_slice;
 
 use std::cmp::{FuzzyEq, FUZZY_EPSILON};