diff --git a/osal/FreeRTOS/FixedTimeslotTask.cpp b/osal/FreeRTOS/FixedTimeslotTask.cpp
index 1dc45b1d..2a7bff9c 100644
--- a/osal/FreeRTOS/FixedTimeslotTask.cpp
+++ b/osal/FreeRTOS/FixedTimeslotTask.cpp
@@ -5,11 +5,12 @@
 uint32_t FixedTimeslotTask::deadlineMissedCount = 0;
 const size_t PeriodicTaskIF::MINIMUM_STACK_SIZE = configMINIMAL_STACK_SIZE;
 
-FixedTimeslotTask::FixedTimeslotTask(const char *name, TaskPriority setPriority,
+FixedTimeslotTask::FixedTimeslotTask(TaskName name, TaskPriority setPriority,
 		TaskStackSize setStack, TaskPeriod overallPeriod,
 		void (*setDeadlineMissedFunc)()) :
 		started(false), handle(NULL), pst(overallPeriod * 1000) {
-	xTaskCreate(taskEntryPoint, name, setStack, this, setPriority, &handle);
+	configSTACK_DEPTH_TYPE stackSize = setStack / sizeof(configSTACK_DEPTH_TYPE);
+	xTaskCreate(taskEntryPoint, name, stackSize, this, setPriority, &handle);
 	// All additional attributes are applied to the object.
 	this->deadlineMissedFunc = setDeadlineMissedFunc;
 }
diff --git a/osal/FreeRTOS/FixedTimeslotTask.h b/osal/FreeRTOS/FixedTimeslotTask.h
index b63cb775..36950773 100644
--- a/osal/FreeRTOS/FixedTimeslotTask.h
+++ b/osal/FreeRTOS/FixedTimeslotTask.h
@@ -24,7 +24,7 @@ public:
 	 * @param setDeadlineMissedFunc Callback if a deadline was missed.
 	 * @return Pointer to the newly created task.
 	 */
-	FixedTimeslotTask(const char *name, TaskPriority setPriority,
+	FixedTimeslotTask(TaskName name, TaskPriority setPriority,
 			TaskStackSize setStack, TaskPeriod overallPeriod,
 			void (*setDeadlineMissedFunc)());
 
diff --git a/osal/FreeRTOS/PeriodicTask.cpp b/osal/FreeRTOS/PeriodicTask.cpp
index f2dcd093..c316d4fc 100644
--- a/osal/FreeRTOS/PeriodicTask.cpp
+++ b/osal/FreeRTOS/PeriodicTask.cpp
@@ -5,12 +5,13 @@
 
 PeriodicTask::PeriodicTask(const char *name, TaskPriority setPriority,
 		TaskStackSize setStack, TaskPeriod setPeriod,
-		void (*setDeadlineMissedFunc)()) :
+		TaskDeadlineMissedFunction deadlineMissedFunc) :
 		started(false), handle(NULL), period(setPeriod), deadlineMissedFunc(
-		setDeadlineMissedFunc)
+		deadlineMissedFunc)
 {
+	configSTACK_DEPTH_TYPE stackSize = setStack / sizeof(configSTACK_DEPTH_TYPE);
 	BaseType_t status = xTaskCreate(taskEntryPoint, name,
-			setStack, this, setPriority, &handle);
+			stackSize, this, setPriority, &handle);
 	if(status != pdPASS){
 		sif::debug << "PeriodicTask Insufficient heap memory remaining. "
 		        "Status: " << status << std::endl;
diff --git a/osal/FreeRTOS/PeriodicTask.h b/osal/FreeRTOS/PeriodicTask.h
index 2be2521c..8030baad 100644
--- a/osal/FreeRTOS/PeriodicTask.h
+++ b/osal/FreeRTOS/PeriodicTask.h
@@ -40,9 +40,9 @@ public:
 	 * The function pointer to the deadline missed function that shall
 	 * be assigned.
 	 */
-	PeriodicTask(const char *name, TaskPriority setPriority,
+	PeriodicTask(TaskName name, TaskPriority setPriority,
 	        TaskStackSize setStack, TaskPeriod setPeriod,
-	        void (*setDeadlineMissedFunc)());
+	        TaskDeadlineMissedFunction deadlineMissedFunc);
 	/**
 	 * @brief	Currently, the executed object's lifetime is not coupled with
 	 * 			the task object's lifetime, so the destructor is empty.
diff --git a/osal/FreeRTOS/TaskFactory.cpp b/osal/FreeRTOS/TaskFactory.cpp
index 663b0531..68866f39 100644
--- a/osal/FreeRTOS/TaskFactory.cpp
+++ b/osal/FreeRTOS/TaskFactory.cpp
@@ -18,8 +18,8 @@ PeriodicTaskIF* TaskFactory::createPeriodicTask(TaskName name_,
 		TaskPriority taskPriority_, TaskStackSize stackSize_,
 		TaskPeriod period_,
 		TaskDeadlineMissedFunction deadLineMissedFunction_) {
-	return (PeriodicTaskIF*) (new PeriodicTask(name_, taskPriority_, stackSize_,
-			period_, deadLineMissedFunction_));
+	return dynamic_cast<PeriodicTaskIF*>(new PeriodicTask(name_, taskPriority_,
+			stackSize_, period_, deadLineMissedFunction_));
 }
 
 /**
@@ -29,8 +29,8 @@ FixedTimeslotTaskIF* TaskFactory::createFixedTimeslotTask(TaskName name_,
 		TaskPriority taskPriority_, TaskStackSize stackSize_,
 		TaskPeriod period_,
 		TaskDeadlineMissedFunction deadLineMissedFunction_) {
-	return (FixedTimeslotTaskIF*) (new FixedTimeslotTask(name_, taskPriority_,
-			stackSize_, period_, deadLineMissedFunction_));
+	return dynamic_cast<FixedTimeslotTaskIF*>(new FixedTimeslotTask(name_,
+			taskPriority_,stackSize_, period_, deadLineMissedFunction_));
 }
 
 ReturnValue_t TaskFactory::deleteTask(PeriodicTaskIF* task) {
diff --git a/tasks/Typedef.h b/tasks/Typedef.h
index b393ee1e..07d96b00 100644
--- a/tasks/Typedef.h
+++ b/tasks/Typedef.h
@@ -1,7 +1,6 @@
 #ifndef FRAMEWORK_TASKS_TYPEDEF_H_
 #define FRAMEWORK_TASKS_TYPEDEF_H_
 
-//TODO more generic?
 typedef const char* TaskName;
 typedef uint8_t TaskPriority;
 typedef size_t TaskStackSize;