diff --git a/src/matrix.rs b/src/dense.rs
similarity index 100%
rename from src/matrix.rs
rename to src/dense.rs
diff --git a/src/lib.rs b/src/lib.rs
index a6f37be27945f70525b081461078d65a869e28dc..e8a903a3e0d1823106be391dd357807c9d1def34 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,5 @@
 //! Fast position-weight matrices using sequence striping and SIMD.
 
 mod abc;
-mod matrix;
+mod dense;
 mod seq;
diff --git a/src/seq.rs b/src/seq.rs
index 946fe62151615d173083c57543bf64fc1602986f..6fe1d89ce6b738d9b6d982608d9bce32dbde22e7 100644
--- a/src/seq.rs
+++ b/src/seq.rs
@@ -1,6 +1,6 @@
 use super::abc::Alphabet;
 use super::abc::InvalidSymbol;
-use super::matrix::DenseMatrix;
+use super::dense::DenseMatrix;
 
 #[derive(Clone, Debug)]
 pub struct EncodedSequence<A: Alphabet> {