diff --git a/05/main.go b/05/main.go
index 138fd80..b0da593 100644
--- a/05/main.go
+++ b/05/main.go
@@ -41,13 +41,11 @@ type point struct {
 	y int
 }
 
-type grid struct {
-	m []int
-}
+type grid []int
 
 func (g *grid) AddLine(start, end point, includeHorizontal bool) {
 	for _, p := range LineFromPoints(start, end, includeHorizontal) {
-		g.m[p.x+p.y*1000]++
+		(*g)[p.x+p.y*1000]++
 	}
 }
 
@@ -108,17 +106,15 @@ func parsePoints(line string) (point, point) {
 func partOne() {
 	scanner := makeScanner(false)
 
-	grid := &grid{
-		m: make([]int, 1_000_000),
-	}
+	grid := make(grid, 1_000_000)
 	for scanner.Scan() {
 		line := scanner.Text()
 		start, end := parsePoints(line)
 		grid.AddLine(start, end, false)
 	}
 	var danger int
-	for i := range grid.m {
-		if grid.m[i] > 1 {
+	for i := range grid {
+		if grid[i] > 1 {
 			danger++
 		}
 	}
@@ -128,17 +124,15 @@ func partOne() {
 func partTwo() {
 	scanner := makeScanner(false)
 
-	grid := &grid{
-		m: make([]int, 1_000_000),
-	}
+	grid := make(grid, 1_000_000)
 	for scanner.Scan() {
 		line := scanner.Text()
 		start, end := parsePoints(line)
 		grid.AddLine(start, end, true)
 	}
 	var danger int
-	for i := range grid.m {
-		if grid.m[i] > 1 {
+	for i := range grid {
+		if grid[i] > 1 {
 			danger++
 		}
 	}