diff --git a/events.go b/events.go
index 4e23b69..6974606 100644
--- a/events.go
+++ b/events.go
@@ -10,7 +10,6 @@ import (
 	"github.com/anhgelus/les-copaings-bot/user"
 	"github.com/bwmarrin/discordgo"
 	"github.com/redis/go-redis/v9"
-	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -37,7 +36,7 @@ func OnMessage(s *discordgo.Session, m *discordgo.MessageCreate) {
 	trimmed := utils.TrimMessage(strings.ToLower(m.Content))
 	m.Member.User = m.Author
 	m.Member.GuildID = m.GuildID
-	xp := exp.MessageXP(uint(len(trimmed)), calcDiversity(trimmed))
+	xp := exp.MessageXP(uint(len(trimmed)), exp.CalcDiversity(trimmed))
 	if xp > MaxXpPerMessage {
 		xp = MaxXpPerMessage
 	}
@@ -52,16 +51,6 @@ func OnMessage(s *discordgo.Session, m *discordgo.MessageCreate) {
 	})
 }
 
-func calcDiversity(msg string) uint {
-	var chars []rune
-	for _, c := range []rune(msg) {
-		if !slices.Contains(chars, c) {
-			chars = append(chars, c)
-		}
-	}
-	return uint(len(chars))
-}
-
 func OnVoiceUpdate(s *discordgo.Session, e *discordgo.VoiceStateUpdate) {
 	if e.Member.User.Bot {
 		return
diff --git a/exp/functions.go b/exp/functions.go
index da535c4..c69ef26 100644
--- a/exp/functions.go
+++ b/exp/functions.go
@@ -3,6 +3,7 @@ package exp
 import (
 	"github.com/anhgelus/gokord"
 	"math"
+	"slices"
 )
 
 func MessageXP(length uint, diversity uint) uint {
@@ -11,6 +12,16 @@ func MessageXP(length uint, diversity uint) uint {
 	))
 }
 
+func CalcDiversity(msg string) uint {
+	var chars []rune
+	for _, c := range []rune(msg) {
+		if !slices.Contains(chars, c) {
+			chars = append(chars, c)
+		}
+	}
+	return uint(len(chars))
+}
+
 func VocalXP(time uint) uint {
 	return uint(math.Floor(
 		0.01*math.Pow(float64(time), 1.3) + 1,