diff --git a/usr.sbin/bsdinstall/partedit/gpart_ops.c b/usr.sbin/bsdinstall/partedit/gpart_ops.c
--- a/usr.sbin/bsdinstall/partedit/gpart_ops.c
+++ b/usr.sbin/bsdinstall/partedit/gpart_ops.c
@@ -1155,11 +1155,15 @@
 			goto addpartform;
 		}
 	} else { /* auto partitioning */
-		items[0].value = strdup(items[0].init);
-		items[1].value = strdup(items[1].init);
-		items[2].value = strdup(items[2].init);
+		if ((items[0].value = strdup(items[0].init)) == NULL)
+			return;
+		if ((items[1].value = strdup(items[1].init)) == NULL)
+			return;
+		if ((items[2].value = strdup(items[2].init)) == NULL)
+			return;
 		if (nitems > 3)
-			items[3].value = strdup(items[3].init);
+			if ((items[3].value = strdup(items[3].init)) == NULL)
+				return;
 	}
 
 	/*