diff --git a/tests/validation.rs b/tests/validation.rs
index 10bc92c..7399399 100644
--- a/tests/validation.rs
+++ b/tests/validation.rs
@@ -6,6 +6,7 @@ mod validation_tests {
     use std::fs::File;
     use std::io::Read;
     use std::path::{Path, PathBuf};
+    use std::str::FromStr;
     use rustdoc::{build, Config, Verbosity};
 
     #[test]