diff --git a/crates/core/src/document/epub/mod.rs b/crates/core/src/document/epub/mod.rs
index 2f761f4..5e0418b 100644
--- a/crates/core/src/document/epub/mod.rs
+++ b/crates/core/src/document/epub/mod.rs
@@ -97,7 +97,7 @@ impl EpubDocument {
                 }).and_then(|href| {
                     let href = decode_entities(href);
                     let href = percent_decode_str(&href).decode_utf8_lossy();
-                    let href_path = parent.join(href.as_ref());
+                    let href_path = parent.join::<&str>(href.as_ref());
                     href_path.to_str().and_then(|path| {
                         archive.by_name(path).map_err(|e| {
                             eprintln!("Can't retrieve '{}' from the archive: {:#}.", path, e)