diff --git a/app/ms1/WebApp_plotter.py b/app/ms1/WebApp_plotter.py
index fbca95b..9342601 100644
--- a/app/ms1/WebApp_plotter.py
+++ b/app/ms1/WebApp_plotter.py
@@ -537,7 +537,7 @@ def make_seq_scatter(
             # Sort dataframe columns alphabetically prior to parsing headers
             df_in = df_in.reindex(sorted(df_in.columns), axis=1)  # Remove sorting to
             df_in = df_in[
-                ["Mass"] + [col for col in df_in.columns if col != "Mass"]
+                ["Feature_ID"] + [col for col in df_in.columns if col != "Feature_ID"]
             ]  # Move mass column to front of dataframe; if a sample replicate is the first column when parsing headers it loses that replicate from the group
 
             # Debug_list