diff --git a/internal/authentication/authentication.go b/internal/authentication/authentication.go
index 2592b29..886ecc0 100644
--- a/internal/authentication/authentication.go
+++ b/internal/authentication/authentication.go
@@ -61,7 +61,7 @@ func (a *Authenticator) requireUserProperty(has hasUserProperty) gin.HandlerFunc
 
 // RequireUser returns a Gin middleware which requires valid user credentials to be supplied with the request.
 func (a *Authenticator) RequireUser() gin.HandlerFunc {
-	return a.requireUserProperty(func(user *model.User) bool {
+	return a.requireUserProperty(func(_ *model.User) bool {
 		return true
 	})
 }
diff --git a/internal/authentication/token.go b/internal/authentication/token.go
index 7e91d6f..9b53cd1 100644
--- a/internal/authentication/token.go
+++ b/internal/authentication/token.go
@@ -13,9 +13,9 @@ var (
 )
 
 func randIntn(n int) int {
-	max := big.NewInt(int64(n))
+	maxValue := big.NewInt(int64(n))
 
-	res, err := rand.Int(rand.Reader, max)
+	res, err := rand.Int(rand.Reader, maxValue)
 	if err != nil {
 		panic("random source is not available")
 	}
diff --git a/tests/mockups/helper.go b/tests/mockups/helper.go
index 8fbbb7e..e4b4edb 100644
--- a/tests/mockups/helper.go
+++ b/tests/mockups/helper.go
@@ -5,8 +5,8 @@ import (
 	"encoding/base64"
 )
 
-func randStr(len int) string {
-	buff := make([]byte, len)
+func randStr(length int) string {
+	buff := make([]byte, length)
 
 	_, err := rand.Read(buff)
 	if err != nil {
@@ -16,5 +16,5 @@ func randStr(len int) string {
 	str := base64.StdEncoding.EncodeToString(buff)
 
 	// Base 64 can be longer than len
-	return str[:len]
+	return str[:length]
 }