diff --git a/.gitignore b/.gitignore
index eb71606..32791f0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,4 @@
 # +-------------------------------------------------------------------------+
 
 locales/po/*.mo
+.omc/
diff --git a/functions.php b/functions.php
index dc67510..3a01559 100644
--- a/functions.php
+++ b/functions.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  ex: set tabstop=4 shiftwidth=4 autoindent:
  +-------------------------------------------------------------------------+
diff --git a/index.php b/index.php
index 362957c..58b5ee0 100644
--- a/index.php
+++ b/index.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  +-------------------------------------------------------------------------+
  | Copyright (C) 2004-2026 The Cacti Group                                 |
diff --git a/locales/LC_MESSAGES/index.php b/locales/LC_MESSAGES/index.php
index 362957c..58b5ee0 100644
--- a/locales/LC_MESSAGES/index.php
+++ b/locales/LC_MESSAGES/index.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  +-------------------------------------------------------------------------+
  | Copyright (C) 2004-2026 The Cacti Group                                 |
diff --git a/locales/index.php b/locales/index.php
index 362957c..58b5ee0 100644
--- a/locales/index.php
+++ b/locales/index.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  +-------------------------------------------------------------------------+
  | Copyright (C) 2004-2026 The Cacti Group                                 |
diff --git a/locales/po/index.php b/locales/po/index.php
index 362957c..58b5ee0 100644
--- a/locales/po/index.php
+++ b/locales/po/index.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  +-------------------------------------------------------------------------+
  | Copyright (C) 2004-2026 The Cacti Group                                 |
diff --git a/maint.php b/maint.php
index af10520..c772b0c 100644
--- a/maint.php
+++ b/maint.php
@@ -1,4 +1,6 @@
 <?php
+
+declare(strict_types=1);
 /*
  ex: set tabstop=4 shiftwidth=4 autoindent:
  +-------------------------------------------------------------------------+
diff --git a/setup.php b/setup.php
index 1d3f18e..b00732c 100644
--- a/setup.php
+++ b/setup.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 /*
  ex: set tabstop=4 shiftwidth=4 autoindent:
  +-------------------------------------------------------------------------+