diff --git a/sf_tool_management/views/tool_base_views.xml b/sf_tool_management/views/tool_base_views.xml
index 834cec5f..bac6533d 100644
--- a/sf_tool_management/views/tool_base_views.xml
+++ b/sf_tool_management/views/tool_base_views.xml
@@ -296,7 +296,7 @@
                     <field name="name"/>
                     <field name="sf_cutting_tool_type_id" invisible="True"/>
                     <field name="tool_groups_id"/>
-                    <field name="diameter" class="table_custom_required"/>
+                    <field name="diameter"/>
                     <field name="knife_tip_r_angle"/>
                     <field name="coarse_middle_thin"/>
                     <field name="tool_stock_num"/>