diff --git a/packages/frontend/@n8n/design-system/src/components/N8nIcon/icons.ts b/packages/frontend/@n8n/design-system/src/components/N8nIcon/icons.ts
index 37e20f93b97..e49dd281e25 100644
--- a/packages/frontend/@n8n/design-system/src/components/N8nIcon/icons.ts
+++ b/packages/frontend/@n8n/design-system/src/components/N8nIcon/icons.ts
@@ -188,6 +188,7 @@ import IconLucideSmile from '~icons/lucide/smile';
 import IconLucideSparkles from '~icons/lucide/sparkles';
 import IconLucideSquare from '~icons/lucide/square';
 import IconLucideSquareCheck from '~icons/lucide/square-check';
+import IconLucideSquareMinus from '~icons/lucide/square-minus';
 import IconLucideSquarePen from '~icons/lucide/square-pen';
 import IconLucideSquarePlus from '~icons/lucide/square-plus';
 import IconLucideStickyNote from '~icons/lucide/sticky-note';
@@ -626,6 +627,7 @@ export const updatedIconSet = {
 	sparkles: IconLucideSparkles,
 	square: IconLucideSquare,
 	'square-check': IconLucideSquareCheck,
+	'square-minus': IconLucideSquareMinus,
 	'square-pen': IconLucideSquarePen,
 	'square-plus': IconLucideSquarePlus,
 	'sticky-note': IconLucideStickyNote,
diff --git a/packages/frontend/editor-ui/src/app/composables/useDataSchema.ts b/packages/frontend/editor-ui/src/app/composables/useDataSchema.ts
index 5489078c0c6..7446a26b8da 100644
--- a/packages/frontend/editor-ui/src/app/composables/useDataSchema.ts
+++ b/packages/frontend/editor-ui/src/app/composables/useDataSchema.ts
@@ -319,7 +319,7 @@ const icons = {
 	object: DATA_TYPE_ICON_MAP.object,
 	array: DATA_TYPE_ICON_MAP.array,
 	['string']: DATA_TYPE_ICON_MAP.string,
-	null: 'case-upper',
+	null: 'square-minus',
 	['number']: DATA_TYPE_ICON_MAP.number,
 	['boolean']: DATA_TYPE_ICON_MAP.boolean,
 	function: 'code',