diff --git a/cmd/zmk-viewer/main.go b/cmd/zmk-viewer/main.go
index 3c431f2..1e55400 100644
--- a/cmd/zmk-viewer/main.go
+++ b/cmd/zmk-viewer/main.go
@@ -29,8 +29,8 @@ func (d debugFlag) BeforeApply() error {
 	return nil
 }
 
-func (v VersionFlag) Decode(ctx *kong.DecodeContext) error { return nil }
-func (v VersionFlag) IsBool() bool                         { return true }
+func (v VersionFlag) Decode(_ *kong.DecodeContext) error { return nil }
+func (v VersionFlag) IsBool() bool                       { return true }
 func (v VersionFlag) BeforeApply(app *kong.Kong) error {
 	fmt.Printf("zmk-viewer has version %s built from %s on %s\n", version, commit, date)
 	app.Exit(0)
diff --git a/internal/lib/generate.go b/internal/lib/generate.go
index 445d573..46a8f5d 100644
--- a/internal/lib/generate.go
+++ b/internal/lib/generate.go
@@ -108,9 +108,9 @@ func drawBehavior(ctx *gg.Context, key *keymap.Behavior, x float64, y float64) {
 	for i, v := range key.Params {
 		str := ""
 		if v.KeyCode == nil {
-			str = str + fmt.Sprintf("%v", *v.Number)
+			str += fmt.Sprintf("%v", *v.Number)
 		} else {
-			str = str + *v.KeyCode
+			str += *v.KeyCode
 		}
 
 		dw, dh := ctx.MeasureString(str)
diff --git a/internal/lib/root.go b/internal/lib/root.go
index ad11580..0247025 100644
--- a/internal/lib/root.go
+++ b/internal/lib/root.go
@@ -15,7 +15,7 @@ type GenerateCmd struct {
 	KeyboardName string `arg:"" help:"Keyboard name to fetch layout."`
 
 	File        string `optional:"" short:"f" type:"existingfile" help:"ZMK .keymap file"`
-	LayoutFile  string `optional:"" short:"l" type:"layoutfile" help:"info.json file"`
+	LayoutFile  string `optional:"" short:"l" type:"existingfile" help:"info.json file"`
 	Transparent bool   `optional:"" short:"t" help:"Use a transparent background."`
 	Output      string `optional:"" short:"o" type:"existingdir" default:"." help:"Output directory."`
 }
@@ -38,6 +38,7 @@ func (g *GenerateCmd) Run() error {
 	g.KeyboardName = strings.ReplaceAll(g.KeyboardName, "/", "_")
 
 	for layoutName, layout := range keyboardInfo {
+		layout := layout
 		ctx := createContext(&layout)
 		err := drawLayout(ctx, g.Transparent, layout)
 		if err != nil {
diff --git a/pkg/keyboard/keyboard.go b/pkg/keyboard/keyboard.go
index 6eb6a7e..7ed2ef8 100644
--- a/pkg/keyboard/keyboard.go
+++ b/pkg/keyboard/keyboard.go
@@ -3,7 +3,7 @@ package keyboard
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 	"time"
@@ -43,7 +43,7 @@ func fetch(url string) (*file, error) {
 		Timeout: time.Second * 5, // Timeout after 2 seconds
 	}
 
-	req, err := http.NewRequest(http.MethodGet, url, nil)
+	req, err := http.NewRequest(http.MethodGet, url, http.NoBody)
 	if err != nil {
 		return nil, err
 	}
@@ -59,7 +59,7 @@ func fetch(url string) (*file, error) {
 		defer res.Body.Close()
 	}
 
-	body, readErr := ioutil.ReadAll(res.Body)
+	body, readErr := io.ReadAll(res.Body)
 	if readErr != nil {
 		return nil, readErr
 	}
@@ -108,5 +108,4 @@ func LoadFile(name, path string) (Layouts, error) {
 	}
 	l := f.Layouts
 	return l, nil
-
 }