diff --git a/main.go b/main.go
index 26ff767..dfbbc1d 100644
--- a/main.go
+++ b/main.go
@@ -72,14 +72,14 @@ func GetSkill(skillName string) Skill {
 	return char.Skills[skillMap[skillName]]
 }
 
-func GetSkillModifier(skill Skill) int {
-	return GetStat(skill.BaseStat).Modifier
-}
-
 func GetStat(statName string) Stat {
 	return char.Stats[statMap[statName]]
 }
 
+func GetModifier(stat Stat) int {
+	return (stat.Score - 10) / 2
+}
+
 func SkillCheck(skill Skill) int {
 	var die, x, y int
 	switch {
@@ -93,10 +93,10 @@ func SkillCheck(skill Skill) int {
 	fmt.Printf("%s%d%s\tx: %d\ty: %d\n", Colors.ColorGreen, die, Colors.ColorReset, x, y)
 	switch {
 	case skill.Expertise:
-		return die + GetSkillModifier(skill) + char.Misc.Proficiency*2
+		return die + GetModifier(GetStat(skill.BaseStat)) + char.Misc.Proficiency*2
 	case skill.Proficient:
-		return die + GetSkillModifier(skill) + char.Misc.Proficiency
+		return die + GetModifier(GetStat(skill.BaseStat)) + char.Misc.Proficiency
 	default:
-		return die + GetSkillModifier(skill)
+		return die + GetModifier(GetStat(skill.BaseStat))
 	}
 }
diff --git a/sheetContent.go b/sheetContent.go
index b72b32d..005604a 100644
--- a/sheetContent.go
+++ b/sheetContent.go
@@ -21,6 +21,5 @@ type Skill struct {
 type Stat struct {
 	StatName   string `json:"statName"`
 	Score      int    `json:"score"`
-	Modifier   int    `json:"modifier"`
 	Proficient bool   `json:"proficient"`
 }
diff --git a/stats.json b/stats.json
index d7761f7..abd3124 100644
--- a/stats.json
+++ b/stats.json
@@ -6,12 +6,12 @@
 		"name": "Bob"
 	},
 	"stats":[
-		{"statName":"strength", "score":20, "modifier":5, "proficient":false },
-		{"statName":"dexterity", "score":10, "modifier":3, "proficient":false },
-		{"statName":"constitution", "score":10, "modifier":0, "proficient":false },
-		{"statName":"intelligence", "score":10, "modifier":0, "proficient":false },
-		{"statName":"wisdom", "score":10, "modifier":0, "proficient":false },
-		{"statName":"charisma", "score":10, "modifier":0, "proficient":false }
+		{"statName":"strength", "score":20, "proficient":false },
+		{"statName":"dexterity", "score":10, "proficient":false },
+		{"statName":"constitution", "score":15, "proficient":false },
+		{"statName":"intelligence", "score":10, "proficient":false },
+		{"statName":"wisdom", "score":10, "proficient":false },
+		{"statName":"charisma", "score":10, "proficient":false }
 	],
 	"skills":[
 		{"skillName":"athletics", "proficient":false, "expertise":false, "baseStat":"strength"},