1 files changed, 7 insertions, 0 deletions
diff --git a/askama_derive/src/generator.rs b/askama_derive/src/generator.rs
index 6004aff..df15bdc 100644
--- a/askama_derive/src/generator.rs
+++ b/askama_derive/src/generator.rs
@@ -916,7 +916,14 @@ impl<'a> Generator<'a> {
         };
 
         let mut expr_buf = Buffer::new(0);
+        let borrow_val = !is_copyable(val);
+        if borrow_val {
+            expr_buf.write("&(");
+        }
         self.visit_expr(&mut expr_buf, val)?;
+        if borrow_val {
+            expr_buf.write(")");
+        }
 
         let shadowed = self.is_shadowing_variable(&l.var)?;
         if shadowed {