diff --git a/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/sx/graph/convert_dataset_json_params.json b/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/sx/graph/convert_dataset_json_params.json
index f3e8cdbad..3a2f90708 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/sx/graph/convert_dataset_json_params.json
+++ b/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/sx/graph/convert_dataset_json_params.json
@@ -1,6 +1,6 @@
 [
   {"paramName":"mt",  "paramLongName":"master",     "paramDescription": "should be local or yarn",  "paramRequired": true},
   {"paramName":"s",   "paramLongName":"sourcePath", "paramDescription": "the source Path",           "paramRequired": true},
-  {"paramName":"t",   "paramLongName":"targetPath", "paramDescription": "the path of the raw graph", "paramRequired": true}
+  {"paramName":"t",   "paramLongName":"targetPath", "paramDescription": "the path of the raw graph", "paramRequired": true},
   {"paramName":"r",   "paramLongName":"filterRelation", "paramDescription": "the relation to filter", "paramRequired": false}
 ]
\ No newline at end of file