diff --git a/config.schema.json b/config.schema.json
index 0acbb84..d1e13dc 100644
--- a/config.schema.json
+++ b/config.schema.json
@@ -4,7 +4,7 @@
     "properties": {
         "inputNature": {
             "description": "Nature des entrées",
-            "type": "array",
+            "type": ["array", "null"],
             "items": {
 		"type": "object",
                 "properties": {