diff --git a/dummies/CMakeLists.txt b/dummies/CMakeLists.txt
index 51d4d4a2..330aecfe 100644
--- a/dummies/CMakeLists.txt
+++ b/dummies/CMakeLists.txt
@@ -22,5 +22,4 @@ target_sources(
          CoreControllerDummy.cpp
          helpers.cpp
          MgmRm3100Dummy.cpp
-         Tmp1075Dummy.cpp
-         DummyHeaterHandler.cpp)
+         Tmp1075Dummy.cpp)
diff --git a/dummies/TemperatureSensorInserter.cpp b/dummies/TemperatureSensorInserter.cpp
index 791a1d51..4852440f 100644
--- a/dummies/TemperatureSensorInserter.cpp
+++ b/dummies/TemperatureSensorInserter.cpp
@@ -6,11 +6,9 @@
 #include <cstdlib>
 
 TemperatureSensorInserter::TemperatureSensorInserter(
-    object_id_t objectId, std::map<object_id_t, Max31865Dummy> tempSensorDummies_,
-    std::map<object_id_t, Tmp1075Dummy> tempTmpSensorDummies_)
-    : SystemObject(objects::THERMAL_TEMP_INSERTER),
-      tempSensorDummies(tempSensorDummies_),
-      tempTmpSensorDummies(tempTmpSensorDummies_) {}
+    object_id_t objectId, const std::map<object_id_t, Max31865Dummy>& tempSensorDummies_,
+    const std::map<object_id_t, Tmp1075Dummy>& tempTmpSensorDummies_)
+    : SystemObject(objects::THERMAL_TEMP_INSERTER) {}
 
 ReturnValue_t TemperatureSensorInserter::initialize() {
   if (performTest) {
diff --git a/dummies/TemperatureSensorInserter.h b/dummies/TemperatureSensorInserter.h
index 18bac79c..1cf49e01 100644
--- a/dummies/TemperatureSensorInserter.h
+++ b/dummies/TemperatureSensorInserter.h
@@ -8,9 +8,9 @@
 
 class TemperatureSensorInserter : public ExecutableObjectIF, public SystemObject {
  public:
-  explicit TemperatureSensorInserter(object_id_t objectId,
-                                     std::map<object_id_t, Max31865Dummy> tempSensorDummies_,
-                                     std::map<object_id_t, Tmp1075Dummy> tempTmpSensorDummies_);
+  explicit TemperatureSensorInserter(
+      object_id_t objectId, const std::map<object_id_t, Max31865Dummy>& tempSensorDummies_,
+      const std::map<object_id_t, Tmp1075Dummy>& tempTmpSensorDummies_);
 
   ReturnValue_t initialize() override;
 
@@ -24,8 +24,5 @@ class TemperatureSensorInserter : public ExecutableObjectIF, public SystemObject
   float value = 0;
   TestCase testCase;
 
-  std::map<object_id_t, Max31865Dummy> tempSensorDummies;
-  std::map<object_id_t, Tmp1075Dummy> tempTmpSensorDummies;
-
   // void noise();
 };