diff --git a/memorylocker/memorylocker.go b/memorylocker/memorylocker.go
index 51c4b83..71ea418 100644
--- a/memorylocker/memorylocker.go
+++ b/memorylocker/memorylocker.go
@@ -21,11 +21,14 @@ type MemoryLocker struct {
 	locks map[string]bool
 }
 
-// New creates a new lock memory.
+// NewMemoryLocker creates a new in-memory locker. The DataStore parameter
+// is only presented for back-wards compatibility and is ignored. Please
+// use the New() function instead.
 func NewMemoryLocker(_ tusd.DataStore) *MemoryLocker {
 	return New()
 }
 
+// New creates a new in-memory locker.
 func New() *MemoryLocker {
 	return &MemoryLocker{
 		locks: make(map[string]bool),