diff --git a/Koha/Item.pm b/Koha/Item.pm
index b5dd6f28db..5fada53af8 100644
--- a/Koha/Item.pm
+++ b/Koha/Item.pm
@@ -1284,7 +1284,7 @@ sub to_api_mapping {
         ccode                    => 'collection_code',
         materials                => 'materials_notes',
         uri                      => 'uri',
-        itype                    => 'item_type',
+        itype                    => 'item_type_id',
         more_subfields_xml       => 'extended_subfields',
         enumchron                => 'serial_issue_number',
         copynumber               => 'copy_number',
diff --git a/api/v1/swagger/definitions/item.json b/api/v1/swagger/definitions/item.json
index 14c110714e..72e6b08214 100644
--- a/api/v1/swagger/definitions/item.json
+++ b/api/v1/swagger/definitions/item.json
@@ -153,7 +153,7 @@
       "type": ["string", "null"],
       "description": "URL for the item"
     },
-    "item_type": {
+    "item_type_id": {
       "type": ["string", "null"],
       "description": "Itemtype defining the type for this item"
     },