diff --git a/base/mp_jsonout.sas b/base/mp_jsonout.sas
index 3b12e85..403cea8 100644
--- a/base/mp_jsonout.sas
+++ b/base/mp_jsonout.sas
@@ -165,8 +165,8 @@
 %end;
 
 %else %if &action=CLOSE %then %do;
-  data _null_;file &jref encoding='utf-8';
+  data _null_;file &jref encoding='utf-8' mod;
     put "}";
   run;
 %end;
-%mend;
\ No newline at end of file
+%mend;