diff --git a/src/fsfw/action/ActionHelper.cpp b/src/fsfw/action/ActionHelper.cpp
index d41c78b4b..bee68b404 100644
--- a/src/fsfw/action/ActionHelper.cpp
+++ b/src/fsfw/action/ActionHelper.cpp
@@ -6,7 +6,7 @@
 ActionHelper::ActionHelper(HasActionsIF* setOwner, MessageQueueIF* useThisQueue)
     : owner(setOwner), queueToUse(useThisQueue) {}
 
-ActionHelper::~ActionHelper() {}
+ActionHelper::~ActionHelper() = default;
 
 ReturnValue_t ActionHelper::handleActionMessage(CommandMessage* command) {
   if (command->getCommand() == ActionMessage::EXECUTE_ACTION) {
@@ -59,7 +59,7 @@ void ActionHelper::setQueueToUse(MessageQueueIF* queue) { queueToUse = queue; }
 
 void ActionHelper::prepareExecution(MessageQueueId_t commandedBy, ActionId_t actionId,
                                     store_address_t dataAddress) {
-  const uint8_t* dataPtr = NULL;
+  const uint8_t* dataPtr = nullptr;
   size_t size = 0;
   ReturnValue_t result = ipcStore->getData(dataAddress, &dataPtr, &size);
   if (result != HasReturnvaluesIF::RETURN_OK) {
diff --git a/src/fsfw/action/ActionHelper.h b/src/fsfw/action/ActionHelper.h
index d86e87d23..a9910b05f 100644
--- a/src/fsfw/action/ActionHelper.h
+++ b/src/fsfw/action/ActionHelper.h
@@ -1,9 +1,9 @@
 #ifndef FSFW_ACTION_ACTIONHELPER_H_
 #define FSFW_ACTION_ACTIONHELPER_H_
 
-#include "../ipc/MessageQueueIF.h"
-#include "../serialize/SerializeIF.h"
 #include "ActionMessage.h"
+#include "fsfw/ipc/MessageQueueIF.h"
+#include "fsfw/serialize/SerializeIF.h"
 /**
  * @brief Action Helper is a helper class which handles action messages
  *
diff --git a/src/fsfw/action/ActionMessage.cpp b/src/fsfw/action/ActionMessage.cpp
index 40a516b17..7fc685586 100644
--- a/src/fsfw/action/ActionMessage.cpp
+++ b/src/fsfw/action/ActionMessage.cpp
@@ -2,9 +2,9 @@
 #include "fsfw/objectmanager/ObjectManager.h"
 #include "fsfw/storagemanager/StorageManagerIF.h"
 
-ActionMessage::ActionMessage() {}
+ActionMessage::ActionMessage() = default;
 
-ActionMessage::~ActionMessage() {}
+ActionMessage::~ActionMessage() = default;
 
 void ActionMessage::setCommand(CommandMessage* message, ActionId_t fid,
                                store_address_t parameters) {
@@ -64,9 +64,8 @@ void ActionMessage::clear(CommandMessage* message) {
   switch (message->getCommand()) {
     case EXECUTE_ACTION:
     case DATA_REPLY: {
-      StorageManagerIF* ipcStore =
-          ObjectManager::instance()->get<StorageManagerIF>(objects::IPC_STORE);
-      if (ipcStore != NULL) {
+      auto* ipcStore = ObjectManager::instance()->get<StorageManagerIF>(objects::IPC_STORE);
+      if (ipcStore != nullptr) {
         ipcStore->deleteData(getStoreId(message));
       }
       break;
diff --git a/src/fsfw/action/CommandActionHelper.cpp b/src/fsfw/action/CommandActionHelper.cpp
index 19d8e9b89..a06bc44c9 100644
--- a/src/fsfw/action/CommandActionHelper.cpp
+++ b/src/fsfw/action/CommandActionHelper.cpp
@@ -2,14 +2,14 @@
 #include "fsfw/objectmanager/ObjectManager.h"
 
 CommandActionHelper::CommandActionHelper(CommandsActionsIF *setOwner)
-    : owner(setOwner), queueToUse(NULL), ipcStore(NULL), commandCount(0), lastTarget(0) {}
+    : owner(setOwner), queueToUse(nullptr), ipcStore(nullptr), commandCount(0), lastTarget(0) {}
 
-CommandActionHelper::~CommandActionHelper() {}
+CommandActionHelper::~CommandActionHelper() = default;
 
 ReturnValue_t CommandActionHelper::commandAction(object_id_t commandTo, ActionId_t actionId,
                                                  SerializeIF *data) {
-  HasActionsIF *receiver = ObjectManager::instance()->get<HasActionsIF>(commandTo);
-  if (receiver == NULL) {
+  auto *receiver = ObjectManager::instance()->get<HasActionsIF>(commandTo);
+  if (receiver == nullptr) {
     return CommandsActionsIF::OBJECT_HAS_NO_FUNCTIONS;
   }
   store_address_t storeId;
@@ -29,11 +29,8 @@ ReturnValue_t CommandActionHelper::commandAction(object_id_t commandTo, ActionId
 
 ReturnValue_t CommandActionHelper::commandAction(object_id_t commandTo, ActionId_t actionId,
                                                  const uint8_t *data, uint32_t size) {
-  //    if (commandCount != 0) {
-  //        return CommandsFunctionsIF::ALREADY_COMMANDING;
-  //    }
-  HasActionsIF *receiver = ObjectManager::instance()->get<HasActionsIF>(commandTo);
-  if (receiver == NULL) {
+  auto *receiver = ObjectManager::instance()->get<HasActionsIF>(commandTo);
+  if (receiver == nullptr) {
     return CommandsActionsIF::OBJECT_HAS_NO_FUNCTIONS;
   }
   store_address_t storeId;
@@ -59,12 +56,12 @@ ReturnValue_t CommandActionHelper::sendCommand(MessageQueueId_t queueId, ActionI
 
 ReturnValue_t CommandActionHelper::initialize() {
   ipcStore = ObjectManager::instance()->get<StorageManagerIF>(objects::IPC_STORE);
-  if (ipcStore == NULL) {
+  if (ipcStore == nullptr) {
     return HasReturnvaluesIF::RETURN_FAILED;
   }
 
   queueToUse = owner->getCommandQueuePtr();
-  if (queueToUse == NULL) {
+  if (queueToUse == nullptr) {
     return HasReturnvaluesIF::RETURN_FAILED;
   }
   return HasReturnvaluesIF::RETURN_OK;
@@ -104,7 +101,7 @@ ReturnValue_t CommandActionHelper::handleReply(CommandMessage *reply) {
 uint8_t CommandActionHelper::getCommandCount() const { return commandCount; }
 
 void CommandActionHelper::extractDataForOwner(ActionId_t actionId, store_address_t storeId) {
-  const uint8_t *data = NULL;
+  const uint8_t *data = nullptr;
   size_t size = 0;
   ReturnValue_t result = ipcStore->getData(storeId, &data, &size);
   if (result != HasReturnvaluesIF::RETURN_OK) {
diff --git a/src/fsfw/action/CommandActionHelper.h b/src/fsfw/action/CommandActionHelper.h
index dd8ad7f1c..a6ec0ca72 100644
--- a/src/fsfw/action/CommandActionHelper.h
+++ b/src/fsfw/action/CommandActionHelper.h
@@ -14,14 +14,14 @@ class CommandActionHelper {
   friend class CommandsActionsIF;
 
  public:
-  CommandActionHelper(CommandsActionsIF* owner);
+  explicit CommandActionHelper(CommandsActionsIF* owner);
   virtual ~CommandActionHelper();
   ReturnValue_t commandAction(object_id_t commandTo, ActionId_t actionId, const uint8_t* data,
                               uint32_t size);
   ReturnValue_t commandAction(object_id_t commandTo, ActionId_t actionId, SerializeIF* data);
   ReturnValue_t initialize();
   ReturnValue_t handleReply(CommandMessage* reply);
-  uint8_t getCommandCount() const;
+  [[nodiscard]] uint8_t getCommandCount() const;
 
  private:
   CommandsActionsIF* owner;
diff --git a/src/fsfw/action/CommandsActionsIF.h b/src/fsfw/action/CommandsActionsIF.h
index 5870a9f2a..94d9a7c4e 100644
--- a/src/fsfw/action/CommandsActionsIF.h
+++ b/src/fsfw/action/CommandsActionsIF.h
@@ -1,9 +1,9 @@
 #ifndef FSFW_ACTION_COMMANDSACTIONSIF_H_
 #define FSFW_ACTION_COMMANDSACTIONSIF_H_
 
-#include "../ipc/MessageQueueIF.h"
-#include "../returnvalues/HasReturnvaluesIF.h"
 #include "CommandActionHelper.h"
+#include "fsfw/ipc/MessageQueueIF.h"
+#include "fsfw/returnvalues/HasReturnvaluesIF.h"
 
 /**
  * Interface to separate commanding actions of other objects.
@@ -21,7 +21,7 @@ class CommandsActionsIF {
   static const uint8_t INTERFACE_ID = CLASS_ID::COMMANDS_ACTIONS_IF;
   static const ReturnValue_t OBJECT_HAS_NO_FUNCTIONS = MAKE_RETURN_CODE(1);
   static const ReturnValue_t ALREADY_COMMANDING = MAKE_RETURN_CODE(2);
-  virtual ~CommandsActionsIF() {}
+  virtual ~CommandsActionsIF() = default;
   virtual MessageQueueIF* getCommandQueuePtr() = 0;
 
  protected:
diff --git a/src/fsfw/action/HasActionsIF.h b/src/fsfw/action/HasActionsIF.h
index acc502d71..89e58adde 100644
--- a/src/fsfw/action/HasActionsIF.h
+++ b/src/fsfw/action/HasActionsIF.h
@@ -1,11 +1,11 @@
 #ifndef FSFW_ACTION_HASACTIONSIF_H_
 #define FSFW_ACTION_HASACTIONSIF_H_
 
-#include "../ipc/MessageQueueIF.h"
-#include "../returnvalues/HasReturnvaluesIF.h"
 #include "ActionHelper.h"
 #include "ActionMessage.h"
 #include "SimpleActionHelper.h"
+#include "fsfw/ipc/MessageQueueIF.h"
+#include "fsfw/returnvalues/HasReturnvaluesIF.h"
 
 /**
  * @brief
@@ -40,12 +40,12 @@ class HasActionsIF {
   static const ReturnValue_t INVALID_PARAMETERS = MAKE_RETURN_CODE(2);
   static const ReturnValue_t EXECUTION_FINISHED = MAKE_RETURN_CODE(3);
   static const ReturnValue_t INVALID_ACTION_ID = MAKE_RETURN_CODE(4);
-  virtual ~HasActionsIF() {}
+  virtual ~HasActionsIF() = default;
   /**
    * Function to get the MessageQueueId_t of the implementing object
    * @return MessageQueueId_t of the object
    */
-  virtual MessageQueueId_t getCommandQueue() const = 0;
+  [[nodiscard]] virtual MessageQueueId_t getCommandQueue() const = 0;
   /**
    * Execute or initialize the execution of a certain function.
    * The ActionHelpers will execute this function and behave differently
diff --git a/src/fsfw/action/SimpleActionHelper.cpp b/src/fsfw/action/SimpleActionHelper.cpp
index 894f0df6f..fc7e064e8 100644
--- a/src/fsfw/action/SimpleActionHelper.cpp
+++ b/src/fsfw/action/SimpleActionHelper.cpp
@@ -3,7 +3,7 @@
 SimpleActionHelper::SimpleActionHelper(HasActionsIF* setOwner, MessageQueueIF* useThisQueue)
     : ActionHelper(setOwner, useThisQueue), isExecuting(false) {}
 
-SimpleActionHelper::~SimpleActionHelper() {}
+SimpleActionHelper::~SimpleActionHelper() = default;
 
 void SimpleActionHelper::step(ReturnValue_t result) {
   // STEP_OFFESET is subtracted to compensate for adding offset in base
@@ -38,7 +38,7 @@ void SimpleActionHelper::prepareExecution(MessageQueueId_t commandedBy, ActionId
     ActionMessage::setStepReply(&reply, actionId, 0, HasActionsIF::IS_BUSY);
     queueToUse->sendMessage(commandedBy, &reply);
   }
-  const uint8_t* dataPtr = NULL;
+  const uint8_t* dataPtr = nullptr;
   size_t size = 0;
   ReturnValue_t result = ipcStore->getData(dataAddress, &dataPtr, &size);
   if (result != HasReturnvaluesIF::RETURN_OK) {
diff --git a/src/fsfw/action/SimpleActionHelper.h b/src/fsfw/action/SimpleActionHelper.h
index 5cb85fbd7..973c7cf2a 100644
--- a/src/fsfw/action/SimpleActionHelper.h
+++ b/src/fsfw/action/SimpleActionHelper.h
@@ -11,15 +11,15 @@
 class SimpleActionHelper : public ActionHelper {
  public:
   SimpleActionHelper(HasActionsIF* setOwner, MessageQueueIF* useThisQueue);
-  virtual ~SimpleActionHelper();
+  ~SimpleActionHelper() override;
   void step(ReturnValue_t result = HasReturnvaluesIF::RETURN_OK);
   void finish(ReturnValue_t result = HasReturnvaluesIF::RETURN_OK);
   ReturnValue_t reportData(SerializeIF* data);
 
  protected:
   void prepareExecution(MessageQueueId_t commandedBy, ActionId_t actionId,
-                        store_address_t dataAddress);
-  virtual void resetHelper();
+                        store_address_t dataAddress) override;
+  void resetHelper() override;
 
  private:
   bool isExecuting;
@@ -28,4 +28,4 @@ class SimpleActionHelper : public ActionHelper {
   uint8_t stepCount = 0;
 };
 
-#endif /* SIMPLEACTIONHELPER_H_ */
+#endif /* FSFW_ACTION_SIMPLEACTIONHELPER_H_ */