diff --git a/snappymail/v/0.0.0/include.php b/snappymail/v/0.0.0/include.php
index 48aff66ad..661635d40 100644
--- a/snappymail/v/0.0.0/include.php
+++ b/snappymail/v/0.0.0/include.php
@@ -4,24 +4,8 @@ if (defined('APP_VERSION_ROOT_PATH')) {
 }
 
 // PHP 8
-if (!function_exists('str_contains')) {
-	function str_contains(string $haystack, string $needle) : bool
-	{
-		return false !== strpos($haystack, $needle);
-	}
-}
-if (!function_exists('str_starts_with')) {
-	function str_starts_with(string $haystack, string $needle) : bool
-	{
-		return 0 === strncmp($haystack, $needle, strlen($needle));
-	}
-}
-if (!function_exists('str_ends_with')) {
-	function str_ends_with(string $haystack, string $needle) : bool
-	{
-		$length = strlen($needle);
-		return $length ? substr($haystack, -$length) === $needle : true;
-	}
+if (\PHP_VERSION_ID < 80000) {
+	require __DIR__ . '/php8.php';
 }
 
 if (!defined('APP_VERSION')) {
diff --git a/snappymail/v/0.0.0/php8.php b/snappymail/v/0.0.0/php8.php
new file mode 100644
index 000000000..82187567c
--- /dev/null
+++ b/snappymail/v/0.0.0/php8.php
@@ -0,0 +1,29 @@
+<?php
+
+if (\PHP_VERSION_ID < 80000)
+{
+	interface Stringable
+	{
+		public function __toString() : string;
+	}
+
+	class ValueError extends Error
+	{
+	}
+
+	function str_contains(string $haystack, string $needle) : bool
+	{
+		return false !== strpos($haystack, $needle);
+	}
+
+	function str_starts_with(string $haystack, string $needle) : bool
+	{
+		return 0 === strncmp($haystack, $needle, strlen($needle));
+	}
+
+	function str_ends_with(string $haystack, string $needle) : bool
+	{
+		$length = strlen($needle);
+		return $length ? substr($haystack, -$length) === $needle : true;
+	}
+}