diff --git a/main.py b/main.py
index 28ca652..7262ef0 100644
--- a/main.py
+++ b/main.py
@@ -88,7 +88,7 @@ async def fastapi_import_inp(network: str, req: Request):
 async def fastapi_export_inp(network: str) -> ChangeSet:
     cs = export_inp(network)
     op = cs.operations[0]
-    op['vertices'] = str(get_all_vertices(network))
+    op['vertex'] = str(get_all_vertices(network))
     op['scada'] = str(get_all_scada_elements(network))
     return cs