diff --git a/src/js/extendedFamilyModeJS.js b/src/js/extendedFamilyModeJS.js
index 295089ca36ed41c110c7b6d556642c55cc3b1c29..cf9a8c3a9a50d309c4a702b346312afc9f701a23 100644
--- a/src/js/extendedFamilyModeJS.js
+++ b/src/js/extendedFamilyModeJS.js
@@ -525,7 +525,7 @@ globalThis.setMissingParents = function(slave) {
 	if (!specificDad(slave)) {
 		slave.father = V.missingParentID;
 		if (gp) {
-			gp.mother = slave.mother;
+			gp.father = slave.father;
 		}
 		V.missingParentID--;
 	}