diff --git a/src/grid.rs b/src/grid.rs
index 9a4ec71..03e6c92 100644
--- a/src/grid.rs
+++ b/src/grid.rs
@@ -1,4 +1,4 @@
-#[derive(Clone, Default, Debug)]
+#[derive(Clone, Default, Debug, PartialEq)]
 pub enum Cell {
     /// Filled.
     Filled,
@@ -9,7 +9,7 @@ pub enum Cell {
 }
 
 /// A NxM dimensional grid of cells.
-#[derive(Debug, Default)]
+#[derive(Debug, Default, PartialEq)]
 pub struct Grid {
     /// Cells.
     pub cells: Vec<Vec<Cell>>,