diff --git a/app/controllers/mpa/pept2data_controller.rb b/app/controllers/mpa/pept2data_controller.rb
index 29c2546..6f0ad0e 100644
--- a/app/controllers/mpa/pept2data_controller.rb
+++ b/app/controllers/mpa/pept2data_controller.rb
@@ -15,6 +15,7 @@ def pept2data
 
     # Request the suffix array search service
     @response = search(peptides, equate_il).uniq
+    @response["equated_IL"] = equate_il
 
     # Collect all lca's to look up the lineages
     taxa = []
diff --git a/app/views/mpa/pept2data/pept2data.json.jbuilder b/app/views/mpa/pept2data/pept2data.json.jbuilder
index 12abf2a..3e738de 100644
--- a/app/views/mpa/pept2data/pept2data.json.jbuilder
+++ b/app/views/mpa/pept2data/pept2data.json.jbuilder
@@ -7,3 +7,4 @@ json.peptides @response do |peptide|
     json.data peptide["fa"]["data"]
   end
 end
+json.equated_IL @response["equated_IL"]