diff --git a/include/text.php b/include/text.php
index d251824e2b..97baee7f60 100644
--- a/include/text.php
+++ b/include/text.php
@@ -1911,58 +1911,3 @@ function format_network_name($network, $url = 0) {
 		return $network_name;
 	}
 }
-
-/**
- * @brief Syntax based code highlighting for popular languages.
- * @param string $s Code block
- * @param string $lang Programming language
- * @return string Formated html
- */
-function text_highlight($s, $lang) {
-	if ($lang === 'js') {
-		$lang = 'javascript';
-	}
-
-	if ($lang === 'bash') {
-		$lang = 'sh';
-	}
-
-	// @TODO: Replace Text_Highlighter_Renderer_Html by scrivo/highlight.php
-
-	// Autoload the library to make constants available
-	class_exists('Text_Highlighter_Renderer_Html');
-
-	$options = [
-		'numbers' => HL_NUMBERS_LI,
-		'tabsize' => 4,
-	];
-
-	$tag_added = false;
-	$s = trim(html_entity_decode($s, ENT_COMPAT));
-	$s = str_replace('    ', "\t", $s);
-
-	/*
-	 * The highlighter library insists on an opening php tag for php code blocks. If
-	 * it isn't present, nothing is highlighted. So we're going to see if it's present.
-	 * If not, we'll add it, and then quietly remove it after we get the processed output back.
-	 */
-	if ($lang === 'php' && strpos($s, '<?php') !== 0) {
-		$s = '<?php' . "\n" . $s;
-		$tag_added = true;
-	}
-
-	$renderer = new Text_Highlighter_Renderer_Html($options);
-	$factory = new Text_Highlighter();
-	$hl = $factory->factory($lang);
-	$hl->setRenderer($renderer);
-	$o = $hl->highlight($s);
-	$o = str_replace("\n", '', $o);
-
-	if ($tag_added) {
-		$b = substr($o, 0, strpos($o, '<li>'));
-		$e = substr($o, strpos($o, '</li>'));
-		$o = $b . $e;
-	}
-
-	return '<code>' . $o . '</code>';
-}
diff --git a/src/Content/Text/BBCode.php b/src/Content/Text/BBCode.php
index ef527f802c..b403b1f349 100644
--- a/src/Content/Text/BBCode.php
+++ b/src/Content/Text/BBCode.php
@@ -1164,21 +1164,6 @@ class BBCode extends BaseObject
 		return $return;
 	}
 
-	private static function textHighlightCallback($match)
-	{
-		// Fallback in case the language doesn't exist
-		$return = '[code]' . $match[2] . '[/code]';
-
-		if (in_array(strtolower($match[1]),
-				['php', 'css', 'mysql', 'sql', 'abap', 'diff', 'html', 'perl', 'ruby',
-				'vbscript', 'avrc', 'dtd', 'java', 'xml', 'cpp', 'python', 'javascript', 'js', 'sh', 'bash'])
-		) {
-			$return = text_highlight($match[2], strtolower($match[1]));
-		}
-
-		return $return;
-	}
-
 	/**
 	 * @brief Converts a BBCode message to HTML message
 	 *