diff --git a/app/controllers/mpa/pept2filtered_controller.rb b/app/controllers/mpa/pept2filtered_controller.rb
index 8aab9ad..5cd3238 100644
--- a/app/controllers/mpa/pept2filtered_controller.rb
+++ b/app/controllers/mpa/pept2filtered_controller.rb
@@ -16,7 +16,7 @@ def pept2filtered
     taxa_filter_ids = (params[:taxa] || []).map(&:to_i)
 
     # Request the suffix array search service
-    @response = search(peptides, equate_il).uniq
+    @response = search(peptides, equate_il, cutoff).uniq
 
     # TODO: we should remove this or use a different approach
     @response.each do |result|
diff --git a/app/helpers/suffix_array_helper.rb b/app/helpers/suffix_array_helper.rb
index ea956a8..460b6f7 100644
--- a/app/helpers/suffix_array_helper.rb
+++ b/app/helpers/suffix_array_helper.rb
@@ -1,7 +1,7 @@
 module SuffixArrayHelper
-  def search(peptides, equate_il)
+  def search(peptides, equate_il, cutoff = 10_000)
     # Convert the peptides array into a json string
-    json_data = { peptides: peptides, equalize_I_and_L: equate_il }.to_json
+    json_data = { peptides: peptides, equalize_I_and_L: equate_il, cutoff: cutoff }.to_json
 
     # The URL to the suffix array search service
     url = URI.parse("http://localhost:3000/search")