diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 0a10a9604c..c937b8f562 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -2662,6 +2662,16 @@ function redirect($url, $return = false, $disable_cd_check = false)
 	// Make sure no &'s are in, this will break the redirect
 	$url = str_replace('&', '&', $url);
 
+	// The url currently uses the web root path.
+	// However as we prepend the full board url later,
+	// we need to remove the relative web root path and
+	// prepend the normal root path again. Otherwise redirects
+	// from inside routes will not work as intended.
+	if ($phpbb_path_helper instanceof \phpbb\path_helper)
+	{
+		$url = $phpbb_path_helper->remove_web_root_path($url);
+	}
+
 	// Determine which type of redirect we need to handle...
 	$url_parts = @parse_url($url);
 
diff --git a/phpBB/phpbb/path_helper.php b/phpBB/phpbb/path_helper.php
index 8cd8808261..71252ac05b 100644
--- a/phpBB/phpbb/path_helper.php
+++ b/phpBB/phpbb/path_helper.php
@@ -101,6 +101,27 @@ class path_helper
 		return $path;
 	}
 
+	/**
+	* Strips away the web root path and prepends the normal root path
+	*
+	* This replaces get_web_root_path() . some_url with
+	*	$phpbb_root_path . some_url
+	*
+	* @param string $path The path to be updated
+	* @return string
+	*/
+	public function remove_web_root_path($path)
+	{
+		if (strpos($path, $this->get_web_root_path()) === 0)
+		{
+			$path = substr($path, strlen($this->get_web_root_path()));
+
+			return $this->phpbb_root_path . $path;
+		}
+
+		return $path;
+	}
+
 	/**
 	* Get a relative root path from the current URL
 	*