diff --git a/purchase_request/views/purchase_request_view.xml b/purchase_request/views/purchase_request_view.xml
index 63f7e8bd4dd..258259ff49b 100644
--- a/purchase_request/views/purchase_request_view.xml
+++ b/purchase_request/views/purchase_request_view.xml
@@ -144,7 +144,7 @@
                     </group>
                     <notebook>
                         <page string="Products">
-                            <field name="line_ids">
+                            <field name="line_ids" readonly="state != 'draft'">
                                 <tree
                                     decoration-muted="cancelled == True"
                                     editable="bottom"