diff --git a/src/modules/butterflies/butterflies_vital_rates.c b/src/modules/butterflies/butterflies_vital_rates.c
index 7d548f6eb125f9a4b05f792d2dbc29d76f76a168..307a7e8d98a2be28b4e7ffcbb4509b7aaa5fe397 100644
--- a/src/modules/butterflies/butterflies_vital_rates.c
+++ b/src/modules/butterflies/butterflies_vital_rates.c
@@ -19,7 +19,7 @@ void bf_add_vital_rates(struct cats_configuration *conf, struct conf_data_butter
         // eggs to adults
         register_module_vital_rate(conf, &data->adults_per_female, "butterflies adults per female");
         set_vital_rate_name(&data->adults_per_female, "butterflies adults per female");
-        set_vital_rate_suitability_cutoff_hint(&data->adults_per_female, HYBRID_SUIT_TS_ZT);
+        set_vital_rate_suitability_cutoff_hint(&data->adults_per_female, HYBRID_SUIT_TS_OT);
         set_vital_rate_link_hybrid_function(&data->adults_per_female, conf, LINK_SUITABILITY_SIGMOID);
 
         // egg to adult survival