diff --git a/src/firmware/xbuilder.rs b/src/firmware/xbuilder.rs
index 4eb0c38..b2b9161 100644
--- a/src/firmware/xbuilder.rs
+++ b/src/firmware/xbuilder.rs
@@ -37,8 +37,7 @@ impl Peekable for LastBuildFirmware {
                     .unwrap()
                     .file_name()
                     .unwrap()
-                    .to_str()
-                    .unwrap()
+                    .to_string_lossy()
                     .to_string(),
             );
         }