diff --git a/src/workflows/run_grn_evaluation/main.nf b/src/workflows/run_grn_evaluation/main.nf
index 12cbc7f93..5e1a50c20 100644
--- a/src/workflows/run_grn_evaluation/main.nf
+++ b/src/workflows/run_grn_evaluation/main.nf
@@ -14,7 +14,6 @@ workflow run_wf {
 
   // construct list of metrics
   metrics = [
-    regression_1,
     regression_2
   ]