diff --git a/cpp/algo_module/algorithm/algo.cpp b/cpp/algo_module/algorithm/algo.cpp
index 082af992a..62e821273 100644
--- a/cpp/algo_module/algorithm/algo.cpp
+++ b/cpp/algo_module/algorithm/algo.cpp
@@ -7,13 +7,13 @@ void Algo::Cover(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result,
   try {
     auto list_nodes = arguments[0].ValueList();
     std::unordered_set<mgp::Node> nodes;
-    for (const auto elem : list_nodes) {
+    for (const auto &elem : list_nodes) {
       auto node = elem.ValueNode();
       nodes.insert(node);
     }
 
-    for (auto node : nodes) {
-      for (auto rel : node.OutRelationships()) {
+    for (const auto &node : nodes) {
+      for (const auto rel : node.OutRelationships()) {
         if (nodes.find(rel.To()) != nodes.end()) {
           auto record = record_factory.NewRecord();
           record.Insert(std::string(kCoverRet1).c_str(), rel);