diff --git a/CHANGELOG.md b/CHANGELOG.md
index 917ce12..02bd8ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 1.1.3 - 2 Aug 2018
+* [#23](https://github.com/BeAPI/acf-options-for-polylang/pull/23) : Requirement to php5.6 whereas namespace are 5.3
+
 ## 1.1.2 - 31 Jul 2018
 * [#22](https://github.com/BeAPI/acf-options-for-polylang/pull/22) : Fix error with repeater fields default values
 
diff --git a/bea-acf-options-for-polylang.php b/bea-acf-options-for-polylang.php
index b76c3fc..70078cc 100644
--- a/bea-acf-options-for-polylang.php
+++ b/bea-acf-options-for-polylang.php
@@ -2,7 +2,7 @@
 
 /*
  Plugin Name: BEA - ACF Options for Polylang
- Version: 1.1.2
+ Version: 1.1.3
  Plugin URI: https://github.com/BeAPI/acf-options-for-polylang
  Description: Add ACF options page support for Polylang.
  Author: Be API Technical team
@@ -34,7 +34,7 @@
 }
 
 // Plugin constants
-define( 'BEA_ACF_OPTIONS_FOR_POLYLANG_VERSION', '1.1.2' );
+define( 'BEA_ACF_OPTIONS_FOR_POLYLANG_VERSION', '1.1.3' );
 define( 'BEA_ACF_OPTIONS_FOR_POLYLANG_MIN_PHP_VERSION', '5.6' );
 
 // Plugin URL and PATH
@@ -43,6 +43,15 @@
 define( 'BEA_ACF_OPTIONS_MAIN_FILE_DIR', __FILE__ );
 define( 'BEA_ACF_OPTIONS_FOR_POLYLANG_PLUGIN_DIRNAME', basename( rtrim( dirname( __FILE__ ), '/' ) ) );
 
+// Check PHP min version
+if ( version_compare( PHP_VERSION, BEA_ACF_OPTIONS_FOR_POLYLANG_MIN_PHP_VERSION, '<' ) ) {
+	require_once( BEA_PB_DIR . 'compat.php' );
+	// possibly display a notice, trigger error
+	add_action( 'admin_init', array( 'BEA\PB\Compatibility', 'admin_init' ) );
+	// stop execution of this file
+	return;
+}
+
 /** Autoload all the things \o/ */
 require_once BEA_ACF_OPTIONS_FOR_POLYLANG_DIR . 'autoload.php';
 
diff --git a/classes/requirements.php b/classes/requirements.php
index 6cc6214..bc8013e 100644
--- a/classes/requirements.php
+++ b/classes/requirements.php
@@ -10,12 +10,6 @@ class Requirements {
 	 * @return bool
 	 */
 	public function check_requirements() {
-		if ( version_compare( PHP_VERSION, BEA_ACF_OPTIONS_FOR_POLYLANG_MIN_PHP_VERSION, '<' ) ) {
-			$this->display_error( sprintf( __( 'Plugin Boilerplate require PHP version %s or greater to be activated. Your server is currently running PHP version %s.', 'bea-acf-options-for-polylang' ), BEA_ACF_OPTIONS_FOR_POLYLANG_MIN_PHP_VERSION, PHP_VERSION ) );
-
-			return false;
-		}
-
 		if ( ! function_exists( 'acf' ) || ! function_exists( 'pll_current_language' ) ) {
 			$this->display_error( __( 'Advanced Custom Fields and Polylang are required plugins.', 'bea-acf-options-for-polylang' ) );
 
diff --git a/compat.php b/compat.php
new file mode 100644
index 0000000..178b516
--- /dev/null
+++ b/compat.php
@@ -0,0 +1,38 @@
+<?php namespace BEA\ACF_Options_For_Polylang;
+
+class Compatibility {
+	/**
+	 * admin_init hook callback
+	 *
+	 * @since 0.1
+	 */
+	public static function admin_init() {
+		// Not on ajax
+		if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
+			return;
+		}
+
+		// Check activation
+		if ( ! current_user_can( 'activate_plugins' ) ) {
+			return;
+		}
+
+		trigger_error( sprintf( 'ACF Options For Polylang requires PHP version %s or greater to be activated.', BEA_ACF_OPTIONS_FOR_POLYLANG_MIN_PHP_VERSION ) );
+
+		// Deactive self
+		deactivate_plugins( BEA_ACF_OPTIONS_FOR_POLYLANG_DIR . 'bea-plugin-boilerplate.php' );
+
+		unset( $_GET['activate'] );
+
+		add_action( 'admin_notices', array( __CLASS__, 'admin_notices' ) );
+	}
+
+	/**
+	 * Notify the user about the incompatibility issue.
+	 */
+	public static function admin_notices() {
+		echo '<div class="notice error is-dismissible">';
+		echo '<p>' . esc_html( sprintf( 'Plugin Boilerplate require PHP version %s or greater to be activated. Your server is currently running PHP version %s.', BEA_ACF_OPTIONS_FOR_POLYLANG_MIN_PHP_VERSION, PHP_VERSION ) ) . '</p>';
+		echo '</div>';
+	}
+}