diff --git a/backend/src/main/kotlin/fr/gouv/cnsp/monitorfish/domain/use_cases/vessel/GetVesselVoyage.kt b/backend/src/main/kotlin/fr/gouv/cnsp/monitorfish/domain/use_cases/vessel/GetVesselVoyage.kt
index 3a968e5f7c..18a0b9d91d 100644
--- a/backend/src/main/kotlin/fr/gouv/cnsp/monitorfish/domain/use_cases/vessel/GetVesselVoyage.kt
+++ b/backend/src/main/kotlin/fr/gouv/cnsp/monitorfish/domain/use_cases/vessel/GetVesselVoyage.kt
@@ -24,7 +24,11 @@ class GetVesselVoyage(
             when (voyageRequest) {
                 VoyageRequest.LAST -> logbookReportRepository.findLastTripBeforeDateTime(
                     internalReferenceNumber,
-                    ZonedDateTime.now(),
+                    /**
+                     * This 4-hour buffer prevents incorrect message datetime to be filtered.
+                     * Sometimes, vessel inboard computers might have offset datetime.
+                     */
+                    ZonedDateTime.now().withHour(4),
                 )
                 VoyageRequest.PREVIOUS -> {
                     require(tripNumber != null) {
diff --git a/frontend/src/features/PriorNotification/PriorNotification.types.ts b/frontend/src/features/PriorNotification/PriorNotification.types.ts
index b31633a40a..993b8b0130 100644
--- a/frontend/src/features/PriorNotification/PriorNotification.types.ts
+++ b/frontend/src/features/PriorNotification/PriorNotification.types.ts
@@ -143,8 +143,8 @@ export namespace PriorNotification {
     TRA = 'TRA'
   }
   export const PURPOSE_LABEL: Record<PurposeCode, string> = {
-    // TODO Find out what this purpose code means.
-    ACS: 'Non supporté',
+    // "Access to services"
+    ACS: 'Accès aux services',
     // "Emergency"
     ECY: 'Urgence',
     // "Vessels grounded and called by the authorities"