diff --git a/ncdump/tst_netcdf4.sh b/ncdump/tst_netcdf4.sh
index da975d54e..4c1260253 100755
--- a/ncdump/tst_netcdf4.sh
+++ b/ncdump/tst_netcdf4.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # This shell script tests ncdump for netcdf-4
 # Ed Hartnett, Dennis Heimbigner, Ward Fisher
 
@@ -7,7 +7,7 @@ if test "x$srcdir" = x ; then srcdir=`pwd`; fi
 
 set -e
 
-ERR {
+function ERR {
     RES=$?
     if [ $RES -ne 0 ]; then
         echo "Error found: $RES"