diff --git a/src/FileCache.php b/src/FileCache.php
index d0da41c..92ebf10 100644
--- a/src/FileCache.php
+++ b/src/FileCache.php
@@ -27,6 +27,7 @@
 use function readdir;
 use function rmdir;
 use function serialize;
+use function set_error_handler;
 use function sprintf;
 use function strpbrk;
 use function substr;