diff --git a/internal/storage/memory/memory.go b/internal/storage/memory/memory.go
index 1a56106106..b3f70e6c09 100644
--- a/internal/storage/memory/memory.go
+++ b/internal/storage/memory/memory.go
@@ -139,5 +139,7 @@ func (s *Storage) gc() {
 
 // Return database client
 func (s *Storage) Conn() map[string]entry {
+	s.mux.RLock()
+	defer s.mux.RUnlock()
 	return s.db
 }