diff --git a/src/main/resources/static/bidder-params/appnexus.json b/src/main/resources/static/bidder-params/appnexus.json
index 3c16fd7845d..8d3675765f3 100644
--- a/src/main/resources/static/bidder-params/appnexus.json
+++ b/src/main/resources/static/bidder-params/appnexus.json
@@ -27,7 +27,7 @@
       "description": "Deprecated, use inv_code instead."
     },
     "member": {
-      "type": "string",
+      "type": ["integer", "string"],
       "description": "An ID which identifies the member selling the impression."
     },
     "keywords": {