diff --git a/playersBoard.go b/playersBoard.go
index 0a2a31b..2e9640a 100644
--- a/playersBoard.go
+++ b/playersBoard.go
@@ -177,7 +177,7 @@ func (p *playerInfo) setAchievement(ach achievement) {
 func (p *playerInfo) unsetAchievement(ach achievement) {
 	for i, a := range p.achievements {
 		if a == ach {
-			p.achievements = append(p.achievements[:i], p.achievements[:i+1]...)
+			p.achievements = append(p.achievements[:i], p.achievements[i+1:]...)
 		}
 	}
 }