diff --git a/data/README.md b/data/README.md
index 252348b..45275eb 100644
--- a/data/README.md
+++ b/data/README.md
@@ -1,2 +1,3 @@
 ## Description
 ### The folder contains initial position data generated from init_position_generator
+#### Note: the LJ_argon256 is not the same file as the liquid256