diff --git a/Configurations/10-main.conf b/Configurations/10-main.conf
index a24b9920a5..f77bfda90d 100644
--- a/Configurations/10-main.conf
+++ b/Configurations/10-main.conf
@@ -1,3 +1,4 @@
+## -*- mode: perl; -*-
 ## Standard openssl configuration targets.
 ##
 ## If you edit this file, run this command before committing
diff --git a/Configurations/90-team.conf b/Configurations/90-team.conf
index 0e78a14a02..1a567d19e8 100644
--- a/Configurations/90-team.conf
+++ b/Configurations/90-team.conf
@@ -1,3 +1,4 @@
+## -*- mode: perl; -*-
 ## Build configuration targets for openssl-team members
 ##
 ## If you edit this file, run this command before committing
diff --git a/Configurations/99-personal-ben.conf b/Configurations/99-personal-ben.conf
index 94ea6d04ae..ed7fa216d6 100644
--- a/Configurations/99-personal-ben.conf
+++ b/Configurations/99-personal-ben.conf
@@ -1,3 +1,4 @@
+## -*- mode: perl; -*-
 ## Personal configuration targets
 ##
 ## If you edit this file, run this command before committing
diff --git a/Configurations/99-personal-bodo.conf b/Configurations/99-personal-bodo.conf
index c9a753417e..2cb22e1488 100644
--- a/Configurations/99-personal-bodo.conf
+++ b/Configurations/99-personal-bodo.conf
@@ -1,3 +1,4 @@
+## -*- mode: perl; -*-
 ## Personal configuration targets
 ##
 ## If you edit this file, run this command before committing
diff --git a/Configurations/99-personal-geoff.conf b/Configurations/99-personal-geoff.conf
index adf0990c7c..ca0ded9a1b 100644
--- a/Configurations/99-personal-geoff.conf
+++ b/Configurations/99-personal-geoff.conf
@@ -1,3 +1,4 @@
+## -*- mode: perl; -*-
 ## Personal configuration targets
 ##
 ## If you edit this file, run this command before committing
diff --git a/Configurations/99-personal-levitte.conf b/Configurations/99-personal-levitte.conf
index 18fbcdc81c..6df2ea623f 100644
--- a/Configurations/99-personal-levitte.conf
+++ b/Configurations/99-personal-levitte.conf
@@ -1,3 +1,4 @@
+## -*- mode: perl; -*-
 ## Personal configuration targets
 ##
 ## If you edit this file, run this command before committing
diff --git a/Configurations/99-personal-rse.conf b/Configurations/99-personal-rse.conf
index e9318fc7b0..0cbe29ff5c 100644
--- a/Configurations/99-personal-rse.conf
+++ b/Configurations/99-personal-rse.conf
@@ -1,3 +1,4 @@
+## -*- mode: perl; -*-
 ## Personal configuration targets
 ##
 ## If you edit this file, run this command before committing
diff --git a/Configurations/99-personal-steve.conf b/Configurations/99-personal-steve.conf
index b75e6a3d62..ed25f9cefa 100644
--- a/Configurations/99-personal-steve.conf
+++ b/Configurations/99-personal-steve.conf
@@ -1,3 +1,4 @@
+## -*- mode: perl; -*-
 ## Personal configuration targets
 ##
 ## If you edit this file, run this command before committing
diff --git a/Configure b/Configure
index c53c316e2d..e344d05d6d 100755
--- a/Configure
+++ b/Configure
@@ -1,3 +1,4 @@
+# -*- mode: perl; -*-
 :
 eval 'exec perl -S $0 ${1+"$@"}'
     if $running_under_some_shell;