diff --git a/erpnext/manufacturing/doctype/bom/bom.py b/erpnext/manufacturing/doctype/bom/bom.py
index 399e71c..5f27c8d 100644
--- a/erpnext/manufacturing/doctype/bom/bom.py
+++ b/erpnext/manufacturing/doctype/bom/bom.py
@@ -420,7 +420,7 @@
 	bom = frappe.get_doc("BOM", bom_no)
 	if not bom.is_active:
 		frappe.throw(_("BOM {0} must be active").format(bom_no))
-	if not bom.docstatus!=1:
+	if not bom.docstatus == 1:
 		if not getattr(frappe.flags, "in_test", False):
 			frappe.throw(_("BOM {0} must be submitted").format(bom_no))
 	if item and not (bom.item == item or \