diff --git a/viper.go b/viper.go
index f657b20..cfa1241 100644
--- a/viper.go
+++ b/viper.go
@@ -1139,7 +1139,7 @@ func (v *Viper) SetDefault(key string, value interface{}) {
 	deepestMap[lastKey] = value
 }
 
-// Set sets the value for the key in the override regiser.
+// Set sets the value for the key in the override register.
 // Set is case-insensitive for a key.
 // Will be used instead of values obtained via
 // flags, config file, ENV, default, or key/value store.