diff --git a/APPL/API/api_gen_import.asp b/APPL/API/api_gen_import.asp
index 7a6d3c783f..eb157b3838 100644
--- a/APPL/API/api_gen_import.asp
+++ b/APPL/API/api_gen_import.asp
@@ -62,6 +62,7 @@
     {
         var warn = res.warning;
         __DoLog("Import (app_key={0}) mislukt: {1}".format(import_app_key, warn), "#ffff00");
+        API.error(warn); // Abort met 500-status
     }
 
     var xmlResp = new ActiveXObject("MSXML2.DOMDocument.6.0");