diff --git a/run.sh b/run.sh
index 3196e065c5527ad085e0285090f58c5723ad6ae7..a4bf98ccb1d3db481162875e547d42bbe696523f 100755
--- a/run.sh
+++ b/run.sh
@@ -15,13 +15,12 @@ then
    exit 1 ;
  fi
 
- source $HOME/openfpm_vars_$6
-
-  echo "AHHHHHHHHHH: $(which mpic++)"
- echo "AHHHHHHHHHH: $(which mpirun)"
+ if [ x"$6" != x"" ]; then
+   source $HOME/openfpm_vars_$6
+ else
+   source $HOME/openfpm_vars_master
+ fi
 
- echo "$LD_LIBRARY_PATH"
- ldd ./src/pdata
 
  if [ x"$3" == x"no_test" ]; then
    exit 0;