diff --git a/src/main.rs b/src/main.rs
index 1a24be6..fcd0c36 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -676,6 +676,7 @@ impl Build {
             .and_then(|target| target.metadata.as_ref())
             .and_then(|metadata| metadata.name.clone())
             .unwrap_or(to_title_case(&target_name));
+        let target_name = target_name.replace('-', "_");
         let source_path = self.make_source_dir(&overall_target_dir, &game_title)?;
         let dest_path = overall_target_dir.join(format!("{}.pdx", &game_title));
         if dest_path.exists() {