diff --git a/src/main.rs b/src/main.rs
index 4c55d4a..7b542e0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -516,5 +516,7 @@ mod tests {
             get_export_file(Some(PathBuf::from("/home/user/export.sh"))),
             Ok(export_file)
         ));
+        // Path is a directory instead of a file
+        assert!(get_export_file(Some(home_dir)).is_err());
     }
 }