diff --git a/esmvaltool/utils/recipe_test_workflow/recipe_test_workflow/flow.cylc b/esmvaltool/utils/recipe_test_workflow/recipe_test_workflow/flow.cylc
index 3035b7705c..fe79410894 100644
--- a/esmvaltool/utils/recipe_test_workflow/recipe_test_workflow/flow.cylc
+++ b/esmvaltool/utils/recipe_test_workflow/recipe_test_workflow/flow.cylc
@@ -100,7 +100,6 @@
             ROSE_TASK_APP = compare
             RECIPE_NAME = "${CYLC_TASK_PARAM_fast##*--}"
             KGO_ROOT_PATH = {{ KGO_ROOT_PATH }}
-            # Create a variable that defines the path to the compare script.
             COMPARE_SCRIPT=${ESMVALTOOL_DIR}/esmvaltool/utils/testing/regression/compare.py
             FOLDER_NAME=${OUTPUT_DIR}/${RECIPE_NAME}*
             KGO=${KGO_ROOT_PATH}/${RECIPE_NAME}*