diff --git a/src/pages/patientView/timeline/legacy.js b/src/pages/patientView/timeline/legacy.js
index 88522725ec8..ef4eef0428d 100644
--- a/src/pages/patientView/timeline/legacy.js
+++ b/src/pages/patientView/timeline/legacy.js
@@ -166,8 +166,7 @@ export function buildTimeline(params, caseIds, patientInfo, clinicalDataMap, cas
     })
     window.pvTimeline =
         window.pvTimeline
-            .splitByClinicalAttributes("Treatment", ["SUBTYPE", "AGENT"])
-            .splitByClinicalAttributes("Treatment", ["TREATMENT_TYPE", "AGENT"])
+            .splitByClinicalAttributes("Treatment", ["TREATMENT_TYPE","SUBTYPE", "AGENT"])
             .collapseAll()
             .toggleTrackCollapse("Specimen")
             .enableTrackTooltips(false)