diff --git a/base/mf_getuniquelibref.sas b/base/mf_getuniquelibref.sas
index b5999d5..fe035c7 100644
--- a/base/mf_getuniquelibref.sas
+++ b/base/mf_getuniquelibref.sas
@@ -26,7 +26,7 @@
   @author Allan Bowe
 **/
 
-%macro mf_getuniquelibref(prefix=mclib,maxtries=1000);
+%macro mf_getuniquelibref(prefix=mc,maxtries=1000);
   %local x;
 
   %if ( %length(&prefix) gt 7 ) %then %do;
diff --git a/viya/mv_createfile.sas b/viya/mv_createfile.sas
index 2f7d675..2abff7b 100644
--- a/viya/mv_createfile.sas
+++ b/viya/mv_createfile.sas
@@ -244,4 +244,11 @@ run;
 %put &sysmacroname: &name created at %mfv_getpathuri(&path/&name);%put;
 %put    &base_uri/SASJobExecution?_file=&path/&name;%put;
 
+%if &mdebug=0 %then %do;
+  /* clear refs */
+  filename &fname1 clear;
+  filename &fref clear;
+  libname &libref2 clear;
+%end;
+
 %mend mv_createfile;
\ No newline at end of file