diff --git a/user_api/call2api.py b/user_api/call2api.py
index 7b60565..c16b776 100644
--- a/user_api/call2api.py
+++ b/user_api/call2api.py
@@ -55,10 +55,10 @@ async def create_invoice(token, dst_username, amount=None):
 		data['amount'] = amount
 	return await call('api/create_invoice/', data)
 
-async def delete_invoice(token, id):
-	data = {'token': token, 'id': id}
+async def delete_invoice(token, invoice_id):
+	data = {'token': token, 'invoice_id': invoice_id}
 	return await call('api/delete_invoice/', data)
 
-async def get_invoice(token, id):
-	data = {'token': token, 'id': id}
+async def get_invoice(token, invoice_id):
+	data = {'token': token, 'invoice_id': invoice_id}
 	return await call('api/get_invoice/', data)
\ No newline at end of file
diff --git a/user_api/user_api.py b/user_api/user_api.py
index 79e52b7..009de3a 100644
--- a/user_api/user_api.py
+++ b/user_api/user_api.py
@@ -192,7 +192,7 @@ async def delete_invoice_api(
 	if not await token_check(username, user_token):
 		raise HTTPException(status_code=401, detail='Invalid username or token')
 	await log(session, user_token, f'/delete_invoice: (id: {invoice_id})')
-	return await delete_invoice(token=SYSTEM_API_TOKEN, id=invoice_id)
+	return await delete_invoice(token=SYSTEM_API_TOKEN, invoice_id=invoice_id)
 
 # IN : username (str), user_token (str), invoice_id (str)
 # OUT: {
@@ -211,7 +211,7 @@ async def get_invoice_api(
 	if not await token_check(username, user_token):
 		raise HTTPException(status_code=401, detail='Invalid username or token')
 	await log(session, user_token, f'/get_invoice: (id: {invoice_id})')
-	return await get_invoice(token=SYSTEM_API_TOKEN, id=invoice_id)
+	return await get_invoice(token=SYSTEM_API_TOKEN, invoice_id=invoice_id)
 
 #------------------------- END ------------------------------