diff --git a/src/search/landmarks/landmark_cost_partitioning_heuristic.cc b/src/search/landmarks/landmark_cost_partitioning_heuristic.cc
index 0f50aed705..612f8fe386 100644
--- a/src/search/landmarks/landmark_cost_partitioning_heuristic.cc
+++ b/src/search/landmarks/landmark_cost_partitioning_heuristic.cc
@@ -18,7 +18,7 @@ namespace landmarks {
 LandmarkCostPartitioningHeuristic::LandmarkCostPartitioningHeuristic(
     const plugins::Options &options,
     bool use_preferred_operators,
-    const std::shared_ptr<AbstractTask> &transform,
+    const shared_ptr<AbstractTask> &transform,
     bool cache_estimates,
     const string &description,
     utils::Verbosity verbosity)
diff --git a/src/search/landmarks/landmark_factory_reasonable_orders_hps.cc b/src/search/landmarks/landmark_factory_reasonable_orders_hps.cc
index 94769089e2..abc4b75de2 100644
--- a/src/search/landmarks/landmark_factory_reasonable_orders_hps.cc
+++ b/src/search/landmarks/landmark_factory_reasonable_orders_hps.cc
@@ -12,7 +12,7 @@
 using namespace std;
 namespace landmarks {
 LandmarkFactoryReasonableOrdersHPS::LandmarkFactoryReasonableOrdersHPS(
-    std::shared_ptr<LandmarkFactory> &lm_factory, utils::Verbosity verbosity)
+    shared_ptr<LandmarkFactory> &lm_factory, utils::Verbosity verbosity)
     : LandmarkFactory(verbosity), lm_factory(lm_factory) {
 }
 
diff --git a/src/search/landmarks/landmark_heuristic.cc b/src/search/landmarks/landmark_heuristic.cc
index 333452a80c..50f5f09c34 100644
--- a/src/search/landmarks/landmark_heuristic.cc
+++ b/src/search/landmarks/landmark_heuristic.cc
@@ -15,7 +15,7 @@ using namespace std;
 namespace landmarks {
 LandmarkHeuristic::LandmarkHeuristic(
     bool use_preferred_operators,
-    const std::shared_ptr<AbstractTask> &transform,
+    const shared_ptr<AbstractTask> &transform,
     bool cache_estimates,
     const string &description,
     utils::Verbosity verbosity)