diff --git a/planet/controllers/expression_profile.py b/planet/controllers/expression_profile.py
index fb20188..30d9d3e 100644
--- a/planet/controllers/expression_profile.py
+++ b/planet/controllers/expression_profile.py
@@ -257,6 +257,7 @@ def expression_profile_compare_plot_json(first_profile_id, second_profile_id, no
     return Response(json.dumps(plot), mimetype='application/json')
 
 
+@cache.memoize(timeout=None)
 def __generate(species_id, method_id, condition):
     """