diff --git a/Makefile.SH b/Makefile.SH
index f83288e24e0a..f6a54f5eb7a2 100755
--- a/Makefile.SH
+++ b/Makefile.SH
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 case $PERL_CONFIG_SH in
 '')
 	if test -f config.sh
diff --git a/Policy_sh.SH b/Policy_sh.SH
index cc310dddd1e4..1c99255dcdf5 100755
--- a/Policy_sh.SH
+++ b/Policy_sh.SH
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 case $PERL_CONFIG_SH in
 '') . ./config.sh ;;
 esac
diff --git a/Porting/Maintainers.pl b/Porting/Maintainers.pl
index e107f710e08e..c9b47528c306 100755
--- a/Porting/Maintainers.pl
+++ b/Porting/Maintainers.pl
@@ -1,3 +1,4 @@
+#!perl
 # A simple listing of core files that have specific maintainers,
 # or at least someone that can be called an "interested party".
 # Also, a "module" does not necessarily mean a CPAN module, it
diff --git a/cflags.SH b/cflags.SH
index 6420bf3916be..899c465cacec 100755
--- a/cflags.SH
+++ b/cflags.SH
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 case $PERL_CONFIG_SH in
 '')
 	if test -f config.sh; then TOP=.;
diff --git a/myconfig.SH b/myconfig.SH
index f5b432ad3113..eafc4586ba3b 100755
--- a/myconfig.SH
+++ b/myconfig.SH
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 case $PERL_CONFIG_SH in
 '')
 	if test -f config.sh; then TOP=.;
diff --git a/regen/regcharclass.pl b/regen/regcharclass.pl
index 7d126428efd6..b22a8a9325ef 100755
--- a/regen/regcharclass.pl
+++ b/regen/regcharclass.pl
@@ -1,3 +1,4 @@
+#!perl
 package CharClass::Matcher;
 use strict;
 use 5.008;
diff --git a/runtests.SH b/runtests.SH
index bab27e9fecc4..24e1ffaf34f5 100755
--- a/runtests.SH
+++ b/runtests.SH
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 case $PERL_CONFIG_SH in
 '')
     if test ! -f config.sh; then
diff --git a/x2p/Makefile.SH b/x2p/Makefile.SH
index 1df26d581605..3f16623e98ee 100755
--- a/x2p/Makefile.SH
+++ b/x2p/Makefile.SH
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 case $PERL_CONFIG_SH in
 '')
 	if test -f config.sh; then TOP=.;
diff --git a/x2p/cflags.SH b/x2p/cflags.SH
index 255f586f2488..caeb3366329f 100755
--- a/x2p/cflags.SH
+++ b/x2p/cflags.SH
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 case $PERL_CONFIG_SH in
 '')
 	if test -f config.sh; then TOP=.;