diff --git a/viper.go b/viper.go
index d9974bc..95ca75b 100644
--- a/viper.go
+++ b/viper.go
@@ -1408,7 +1408,7 @@ func (v *Viper) Set(key string, value interface{}) {
 
 // Unset deletes a key from Viper.
 // Unset is case-insensitive for a key.
-func Unset(key string) { v.Unset(key, value) }
+func Unset(key string) { v.Unset(key) }
 func (v *Viper) Unset(key string) {
 	// If alias passed in, then set the proper override
 	key = v.realKey(strings.ToLower(key))