diff --git a/viper.go b/viper.go
index 7173c6e..fb25529 100644
--- a/viper.go
+++ b/viper.go
@@ -1765,6 +1765,12 @@ func (v *Viper) SetConfigType(in string) {
 	}
 }
 
+// SetKeyDelim set the delimiter string used to separate key values
+// returned by AllKeys(). This is useful if you need to allow for
+// the '.' character in key names.
+func SetKeyDelim(delim string) { v.keyDelim = delim }
+func (v *Viper) SetKeyDelim(delim string) { v.keyDelim = delim }
+
 func (v *Viper) getConfigType() string {
 	if v.configType != "" {
 		return v.configType