diff --git a/matrix/matrix.go b/matrix/matrix.go
index 5fa857b..2bb4ba4 100644
--- a/matrix/matrix.go
+++ b/matrix/matrix.go
@@ -126,7 +126,7 @@ func (m *Matrix) WithEpsilon(epsilon float64) *Matrix {
 
 // Each applies the action to each element of the matrix in
 // rows => cols order.
-func (m *Matrix) Each(action func(row, cow int, value float64)) {
+func (m *Matrix) Each(action func(row, col int, value float64)) {
 	rows, cols := m.Size()
 	for row := 0; row < rows; row++ {
 		for col := 0; col < cols; col++ {