diff --git a/DataGuide_AAPF_HSI.md b/DataGuide_AAPF_HSI.md
index 83fdeba..44ba8d9 100644
--- a/DataGuide_AAPF_HSI.md
+++ b/DataGuide_AAPF_HSI.md
@@ -33,7 +33,7 @@ This document details the file system organization and navigation procedures for
     - Filename convention: `HSI_R_{POT_BARCODE}_{Time_In}_{VNIR|SWIR}-{SIDE|TOP}-DAT_{Experiment_No}_{Treatment}_{Time_Out}.{hdr|md5|raw|tiff}`. For additional information, refer to [this link](https://github.itap.purdue.edu/PlantScience/DataExploration-AAPF/blob/main/DataGuide_AAPF_RGB.md#filename-conventions).
 
 
-#### Interim Data Product
+#### Interim Data Product & Masterfile
 
     Example (does not contain all associated files):
     401