diff --git a/ers/filecsv.go b/ers/filecsv.go
index b00f45eae..fa511f250 100644
--- a/ers/filecsv.go
+++ b/ers/filecsv.go
@@ -120,7 +120,10 @@ func (rdr *CSVFileER) processFile(fPath, fName string) (err error) {
 	}
 	defer file.Close()
 	csvReader := csv.NewReader(bufio.NewReader(file))
-	csvReader.Comma = rune(rdr.Config().FieldSep[0])
+	csvReader.Comma = ','
+	if len(rdr.Config().FieldSep) > 0 {
+		csvReader.Comma = rune(rdr.Config().FieldSep[0])
+	}
 	csvReader.Comment = '#'
 	rowNr := 0 // This counts the rows in the file, not really number of CDRs
 	evsPosted := 0