diff --git a/sas/sasjs/services/public/viewdata.sas b/sas/sasjs/services/public/viewdata.sas
index 4c22eab..153e278 100644
--- a/sas/sasjs/services/public/viewdata.sas
+++ b/sas/sasjs/services/public/viewdata.sas
@@ -290,6 +290,7 @@ run;
   run;
   data work.groups;
     length groupuri groupname $32 groupdesc $128 ;
+    call missing (of _all_);
     output;
     stop;
   run;