diff --git a/src/search/search_space.h b/src/search/search_space.h
index b7d4b0cf07..01aca776ba 100644
--- a/src/search/search_space.h
+++ b/src/search/search_space.h
@@ -46,8 +46,8 @@ class SearchNode {
                                  const OperatorProxy &parent_op,
                                  int adjusted_cost);
     void update_closed_node_parent(const SearchNode &parent_node,
-                                 const OperatorProxy &parent_op,
-                                 int adjusted_cost);
+                                   const OperatorProxy &parent_op,
+                                   int adjusted_cost);
     void close();
     void mark_as_dead_end();