diff --git a/config.go b/config.go
index 70f4c1f..7f21dc7 100644
--- a/config.go
+++ b/config.go
@@ -89,6 +89,10 @@ func InMemoryOnlyConfig() Config {
 	indexConfig := index.InMemoryOnlyConfig()
 	return defaultConfig(indexConfig)
 }
+func DefaultConfigWithDirectory(df func() index.Directory) Config {
+	indexConfig := index.DefaultConfigWithDirectory(df)
+	return defaultConfig(indexConfig)
+}
 
 func defaultConfig(indexConfig index.Config) Config {
 	rv := Config{
diff --git a/index/config.go b/index/config.go
index 65bf914..c7217cd 100644
--- a/index/config.go
+++ b/index/config.go
@@ -145,6 +145,12 @@ func InMemoryOnlyConfig() Config {
 	return rv
 }
 
+func DefaultConfigWithDirectory(df func() Directory) Config {
+	rv := defaultConfig()
+	rv.DirectoryFunc = df
+	return rv
+}
+
 func defaultConfig() Config {
 	rv := Config{
 		SegmentType:      ice.Type,