diff --git a/src/facilities/nursery/widgets/utils/nurseryUtils.js b/src/facilities/nursery/widgets/utils/nurseryUtils.js
index 383717caf0b055d12c578705df109f08fd597260..b05e16a745919abfa1c026517b99d2afe15fc224 100644
--- a/src/facilities/nursery/widgets/utils/nurseryUtils.js
+++ b/src/facilities/nursery/widgets/utils/nurseryUtils.js
@@ -665,7 +665,7 @@ App.Facilities.Nursery.newChild = function newChild(child) {
 	};
 
 	if (V.surnamesForbidden === 1) {
-		child.childSurname = 0;
+		child.slaveSurname = 0;
 	}
 
 	if (child.clone !== 0) {