1 files changed, 9 insertions, 7 deletions
diff --git a/src/sort.c b/src/sort.c
index 0f9b93d..c5ba091 100644
--- a/src/sort.c
+++ b/src/sort.c
@@ -95,13 +95,15 @@ _qsort_nodelist(struct node_list *list,
 		cur = next;
 	}
 
-	/* Sort both sublists recursively */
-	_qsort_nodelist(&low_list, compare);
-	_qsort_nodelist(&high_list, compare);
-
-	/* Join both lists in order */
-	node_list_join(&low_list, &high_list);
-
+	if (!low_list.head)
+		low_list = high_list;
+	else if (high_list.head) {
+		/* Sort both sublists recursively */
+		_qsort_nodelist(&low_list, compare);
+		_qsort_nodelist(&high_list, compare);
+		/* Join both lists in order */
+		node_list_join(&low_list, &high_list);
+	}
 	/* Return the resulting list */
 	list->head = low_list.head;
 	list->tail = low_list.tail;