diff --git a/src/examples/test_kf_callback.cpp b/src/examples/test_kf_callback.cpp
index 5101341c0a3ac7ea06a6245361dfac35ed1cde26..75d0c293951a09c467096297062d60ba1b0ce9f0 100644
--- a/src/examples/test_kf_callback.cpp
+++ b/src/examples/test_kf_callback.cpp
@@ -25,7 +25,7 @@ int main()
     prc_odo->setTimeTolerance(0.1);
 
     SensorBasePtr sen_ftr    = problem->installSensor   ("ODOM 2D", "other odometer", (Vector3s()<<0,0,0).finished(),"");
-    shared_ptr<ProcessorTrackerFeatureDummy> prc_ftr = make_shared<ProcessorTrackerFeatureDummy>(7, 4);
+    shared_ptr<ProcessorTrackerFeatureDummy> prc_ftr = make_shared<ProcessorTrackerFeatureDummy>(0.5, 7, 4);
     prc_ftr->setName("tracker");
     sen_ftr->addProcessor(prc_ftr);
     prc_ftr->setTimeTolerance(0.1);
diff --git a/src/examples/test_processor_tracker_feature.cpp b/src/examples/test_processor_tracker_feature.cpp
index 15655bce2e5f2553974f5278127117169dcd65dd..fcf29c545f2cdd837f5190f0c123e8bde25835d7 100644
--- a/src/examples/test_processor_tracker_feature.cpp
+++ b/src/examples/test_processor_tracker_feature.cpp
@@ -31,7 +31,7 @@ int main()
                                              std::make_shared<StateBlock>(Eigen::VectorXs::Zero(1)),
                                              std::make_shared<StateBlock>(Eigen::VectorXs::Zero(2)), 2);
 
-    shared_ptr<ProcessorTrackerFeatureDummy> processor_ptr_ = make_shared<ProcessorTrackerFeatureDummy>(7, 4);
+    shared_ptr<ProcessorTrackerFeatureDummy> processor_ptr_ = make_shared<ProcessorTrackerFeatureDummy>(.25, 7, 4);
 
     wolf_problem_ptr_->addSensor(sensor_ptr_);
     sensor_ptr_->addProcessor(processor_ptr_);
diff --git a/src/examples/test_processor_tracker_landmark.cpp b/src/examples/test_processor_tracker_landmark.cpp
index bc5955a56a0cc50f0daffc85b455a9bfa9179898..6f828298d8147e1bba28f373558d8eda96c04276 100644
--- a/src/examples/test_processor_tracker_landmark.cpp
+++ b/src/examples/test_processor_tracker_landmark.cpp
@@ -66,7 +66,7 @@ int main()
                                              std::make_shared<StateBlock>(Eigen::VectorXs::Zero(1)),
                                              std::make_shared<StateBlock>(Eigen::VectorXs::Zero(2)), 2);
 
-    std::shared_ptr<ProcessorTrackerLandmarkDummy> processor_ptr_ = std::make_shared< ProcessorTrackerLandmarkDummy>(5);
+    std::shared_ptr<ProcessorTrackerLandmarkDummy> processor_ptr_ = std::make_shared< ProcessorTrackerLandmarkDummy>(.25, 5);
 
     wolf_problem_ptr_->addSensor(sensor_ptr_);
     sensor_ptr_->addProcessor(processor_ptr_);
diff --git a/src/processor_tracker_landmark_dummy.cpp b/src/processor_tracker_landmark_dummy.cpp
index 71051458bfdd9ef5b5f4013984e20de93c4370b8..02d5f9893fdd4df0ba791e649448f703861a71b6 100644
--- a/src/processor_tracker_landmark_dummy.cpp
+++ b/src/processor_tracker_landmark_dummy.cpp
@@ -12,8 +12,10 @@
 namespace wolf
 {
 
-ProcessorTrackerLandmarkDummy::ProcessorTrackerLandmarkDummy(const unsigned int& _max_new_features) :
-        ProcessorTrackerLandmark("TRACKER LANDMARK DUMMY", _max_new_features, 0.1), n_feature_(0), landmark_idx_non_visible_(0)
+ProcessorTrackerLandmarkDummy::ProcessorTrackerLandmarkDummy(const Scalar _time_tolerance, const unsigned int& _max_new_features) :
+        ProcessorTrackerLandmark("TRACKER LANDMARK DUMMY", _time_tolerance, _max_new_features),
+        n_feature_(0),
+        landmark_idx_non_visible_(0)
 {
     //
 
diff --git a/src/processor_tracker_landmark_dummy.h b/src/processor_tracker_landmark_dummy.h
index 4c8a2b8c8d09477a9ea27ba2020ac8151e9f28e0..835fa27ce8a323ea71583166673ee903b2fa1973 100644
--- a/src/processor_tracker_landmark_dummy.h
+++ b/src/processor_tracker_landmark_dummy.h
@@ -18,7 +18,7 @@ WOLF_PTR_TYPEDEFS(ProcessorTrackerLandmarkDummy);
 class ProcessorTrackerLandmarkDummy : public ProcessorTrackerLandmark
 {
     public:
-        ProcessorTrackerLandmarkDummy(const unsigned int& _max_new_features);
+        ProcessorTrackerLandmarkDummy(const Scalar _time_tolerance, const unsigned int& _max_new_features);
         virtual ~ProcessorTrackerLandmarkDummy();
 
     protected: