diff --git a/cookienotice/cookienotice.php b/cookienotice/cookienotice.php
index 097f3c25..bad867e7 100644
--- a/cookienotice/cookienotice.php
+++ b/cookienotice/cookienotice.php
@@ -12,6 +12,7 @@ use Friendica\Core\Config;
 use Friendica\Core\Hook;
 use Friendica\Core\L10n;
 use Friendica\Core\Renderer;
+use Friendica\DI;
 
 /**
  * cookienotice_install
@@ -90,8 +91,8 @@ function cookienotice_page_content_top(App $a, &$b)
 	$stylesheetPath = __DIR__ . '/cookienotice.css';
 	$footerscriptPath = __DIR__ . '/cookienotice.js';
 
-	$a->registerStylesheet($stylesheetPath);
-	$a->registerFooterScript($footerscriptPath);
+	DI::page()->registerStylesheet($stylesheetPath);
+	DI::page()->registerFooterScript($footerscriptPath);
 }
 
 /**
diff --git a/geonames/geonames.php b/geonames/geonames.php
index c052cef6..03a2e45b 100644
--- a/geonames/geonames.php
+++ b/geonames/geonames.php
@@ -13,6 +13,7 @@ use Friendica\Core\L10n;
 use Friendica\Core\Logger;
 use Friendica\Core\PConfig;
 use Friendica\Core\Renderer;
+use Friendica\DI;
 use Friendica\Util\ConfigFileLoader;
 use Friendica\Util\Network;
 use Friendica\Util\XML;
@@ -136,7 +137,7 @@ function geonames_addon_settings(App $a, &$s)
 
 	/* Add our stylesheet to the page so we can make our settings look nice */
 	$stylesheetPath = __DIR__ . '/geonames.css';
-	$a->registerStylesheet($stylesheetPath);
+	DI::page()->registerStylesheet($stylesheetPath);
 
 	/* Get the current state of our config variable */
 	$enabled = intval(PConfig::get(local_user(), 'geonames', 'enable'));
diff --git a/highlightjs/highlightjs.php b/highlightjs/highlightjs.php
index 258cb4ad..823541bb 100644
--- a/highlightjs/highlightjs.php
+++ b/highlightjs/highlightjs.php
@@ -8,6 +8,7 @@
 
 use Friendica\App;
 use Friendica\Core\Hook;
+use Friendica\DI;
 
 function highlightjs_install()
 {
@@ -29,11 +30,11 @@ function highlightjs_head(App $a, &$b)
 		$style = 'default';
 	}
 
-	$a->registerStylesheet(__DIR__ . '/asset/styles/' . $style . '.css');
+	DI::page()->registerStylesheet(__DIR__ . '/asset/styles/' . $style . '.css');
 }
 
 function highlightjs_footer(App $a, &$b)
 {
-	$a->registerFooterScript(__DIR__ . '/asset/highlight.pack.js');
-	$a->registerFooterScript(__DIR__ . '/highlightjs.js');
+	DI::page()->registerFooterScript(__DIR__ . '/asset/highlight.pack.js');
+	DI::page()->registerFooterScript(__DIR__ . '/highlightjs.js');
 }
diff --git a/mathjax/mathjax.php b/mathjax/mathjax.php
index 6e80d68f..2974f762 100644
--- a/mathjax/mathjax.php
+++ b/mathjax/mathjax.php
@@ -13,6 +13,7 @@ use Friendica\Core\Hook;
 use Friendica\Core\L10n;
 use Friendica\Core\PConfig;
 use Friendica\Core\Renderer;
+use Friendica\DI;
 
 function mathjax_install()
 {
@@ -64,7 +65,7 @@ function mathjax_footer(App $a, &$b)
 	//  if the visitor of the page is not a local_user, use MathJax
 	//  otherwise check the users settings.
 	if (!local_user() || PConfig::get(local_user(), 'mathjax', 'use', false)) {
-		$a->registerFooterScript(__DIR__ . '/asset/MathJax.js?config=TeX-MML-AM_CHTML');
-		$a->registerFooterScript(__DIR__ . '/mathjax.js');
+		DI::page()->registerFooterScript(__DIR__ . '/asset/MathJax.js?config=TeX-MML-AM_CHTML');
+		DI::page()->registerFooterScript(__DIR__ . '/mathjax.js');
 	}
 }
diff --git a/pageheader/pageheader.php b/pageheader/pageheader.php
index fd07fc1d..1a7fb4eb 100644
--- a/pageheader/pageheader.php
+++ b/pageheader/pageheader.php
@@ -13,6 +13,7 @@ use Friendica\Core\Config;
 use Friendica\Core\Hook;
 use Friendica\Core\L10n;
 use Friendica\Core\Renderer;
+use Friendica\DI;
 
 function pageheader_install() {
     Hook::register('page_content_top', __FILE__, 'pageheader_fetch');
@@ -26,7 +27,7 @@ function pageheader_addon_admin(App &$a, &$s)
 
     /* Add our stylesheet to the page so we can make our settings look nice */
 	$stylesheetPath = __DIR__ . '/pageheader.css';
-	$a->registerStylesheet($stylesheetPath);
+	DI::page()->registerStylesheet($stylesheetPath);
 
 	$words = Config::get('pageheader','text');
 	if(! $words)
@@ -65,7 +66,7 @@ function pageheader_fetch(App $a, &$b)
 	}
 
 	$stylesheetPath = __DIR__ .'/pageheader.css';
-	$a->registerStylesheet($stylesheetPath);
+	DI::page()->registerStylesheet($stylesheetPath);
     
     if ($s) {
         $b .= '<div class="pageheader">' . $s . '</div>';