diff --git a/viper.go b/viper.go
index 8d216a2..2bc8db5 100644
--- a/viper.go
+++ b/viper.go
@@ -457,7 +457,7 @@ func (v *Viper) GetStringMapString(key string) map[string]string {
 
 // Returns the value associated with the key as a map to a slice of strings
 func GetStringMapStringSlice(key string) map[string][]string { return v.GetStringMapStringSlice(key) }
-func (v *Viper) GetStringMapStringSlice(key string) map[string]string {
+func (v *Viper) GetStringMapStringSlice(key string) map[string][]string {
 	return cast.ToStringMapStringSlice(v.Get(key))
 }