diff --git a/src/advanced_docx.rs b/src/advanced_docx.rs
index e41b611..31995a9 100644
--- a/src/advanced_docx.rs
+++ b/src/advanced_docx.rs
@@ -478,7 +478,7 @@ impl AdvancedDocxHandler {
         );
         
         // Invoice details table
-        let mut invoice_info = Table::new(vec![])
+        let invoice_info = Table::new(vec![])
         .add_row(TableRow::new(vec![
             TableCell::new().add_paragraph(Paragraph::new().add_run(Run::new().add_text("Invoice #:"))),
             TableCell::new().add_paragraph(Paragraph::new().add_run(Run::new().add_text("[INV-0001]"))),