--- t/00prim.t
+++ t/00prim.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test that the primitive operators are working
--- t/01tag.t
+++ t/01tag.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test that the primitive operators are working
--- t/02seq.t
+++ t/02seq.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test the use of sequences
--- t/03seqof.t
+++ t/03seqof.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test that the primitive operators are working
--- t/04opt.t
+++ t/04opt.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test that the primitive operators are working
--- t/05time.t
+++ t/05time.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test that the primitive operators are working
--- t/06bigint.t
+++ t/06bigint.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test bigint INTEGER encoding/decoding
--- t/07io.t
+++ t/07io.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 use Convert::ASN1 qw(:io);
 use IO::Socket;
--- t/08set.t
+++ t/08set.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test the use of sets
--- t/09contr.t
+++ t/09contr.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test the decode on constructed values
--- t/10choice.t
+++ t/10choice.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test the use of choices
--- t/11indef.t
+++ t/11indef.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test that indefinite length encodings can be decoded
--- t/12der.t
+++ t/12der.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test the use of sets
--- t/13utf8.t
+++ t/13utf8.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Test the use of utf8 strings
--- t/14any.t
+++ t/14any.t
@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl
+#!/usr/bin/perl -w
 
 #
 # Check whether the ANY DEFINED BY syntax is working