diff --git a/packages/frontend-2/components/automation/ViewerFunctionRunItem.vue b/packages/frontend-2/components/automation/ViewerFunctionRunItem.vue
index 60eaf0356f..2fc94d994a 100644
--- a/packages/frontend-2/components/automation/ViewerFunctionRunItem.vue
+++ b/packages/frontend-2/components/automation/ViewerFunctionRunItem.vue
@@ -155,7 +155,7 @@ const { items } = useInjectedViewerRequestedResources()
 type ObjectResult = {
   category: string
   objectIds: string[]
-  message: string
+  message: string | null
   level: 'ERROR' | 'WARNING' | 'INFO'
 }
 
diff --git a/packages/frontend-2/components/automation/ViewerResultRowItem.vue b/packages/frontend-2/components/automation/ViewerResultRowItem.vue
index 4831562c0a..5907b598c5 100644
--- a/packages/frontend-2/components/automation/ViewerResultRowItem.vue
+++ b/packages/frontend-2/components/automation/ViewerResultRowItem.vue
@@ -16,7 +16,7 @@
           {{ result.category }}: {{ result.objectIds.length }} affected elements
         </div>
       </div>
-      <div class="text-xs text-foreground-2 pl-5">
+      <div v-if="result.message" class="text-xs text-foreground-2 pl-5">
         {{ result.message }}
       </div>
     </button>
@@ -41,7 +41,7 @@ import type { NumericPropertyInfo } from '@speckle/viewer'
 type ObjectResultWithOptionalMetadata = {
   category: string
   objectIds: string[]
-  message: string
+  message: string | null
   level: 'ERROR' | 'WARNING' | 'INFO'
   metadata?: {
     gradient?: boolean
diff --git a/packages/server/modules/automations/helpers/inputTypes.ts b/packages/server/modules/automations/helpers/inputTypes.ts
index fe61de4948..99f009289f 100644
--- a/packages/server/modules/automations/helpers/inputTypes.ts
+++ b/packages/server/modules/automations/helpers/inputTypes.ts
@@ -11,7 +11,7 @@ const ObjectResultLevelEnum = z.enum(ObjectResultLevel)
 
 const ObjectResultValuesSchema = z.object({
   level: ObjectResultLevelEnum,
-  message: z.string(),
+  message: z.string().nullable(),
   category: z.string(),
   objectIds: z.string().array().nonempty(),
   metadata: z.record(z.string(), z.unknown()).nullable(),