diff --git a/src/displayapp/screens/settings/SettingHeartRate.cpp b/src/displayapp/screens/settings/SettingHeartRate.cpp
index d3da19b2..7d8206cd 100644
--- a/src/displayapp/screens/settings/SettingHeartRate.cpp
+++ b/src/displayapp/screens/settings/SettingHeartRate.cpp
@@ -1,6 +1,5 @@
 #include "displayapp/screens/settings/SettingHeartRate.h"
 #include <lvgl/lvgl.h>
-#include "displayapp/DisplayApp.h"
 #include "displayapp/screens/Styles.h"
 #include "displayapp/screens/Screen.h"
 #include "displayapp/screens/Symbols.h"
@@ -18,8 +17,8 @@ namespace {
 
 constexpr std::array<Option, 8> SettingHeartRate::options;
 
-SettingHeartRate::SettingHeartRate(Pinetime::Applications::DisplayApp* app, Pinetime::Controllers::Settings& settingsController)
-  : app {app}, settingsController {settingsController} {
+SettingHeartRate::SettingHeartRate(Pinetime::Controllers::Settings& settingsController)
+  : settingsController {settingsController} {
 
   lv_obj_t* container1 = lv_cont_create(lv_scr_act(), nullptr);
 
diff --git a/src/displayapp/screens/settings/SettingHeartRate.h b/src/displayapp/screens/settings/SettingHeartRate.h
index 40eff744..3cb08907 100644
--- a/src/displayapp/screens/settings/SettingHeartRate.h
+++ b/src/displayapp/screens/settings/SettingHeartRate.h
@@ -21,13 +21,12 @@ namespace Pinetime {
 
       class SettingHeartRate : public Screen {
       public:
-        SettingHeartRate(Pinetime::Applications::DisplayApp* app, Pinetime::Controllers::Settings& settings);
+        SettingHeartRate(Pinetime::Controllers::Settings& settings);
         ~SettingHeartRate() override;
 
         void UpdateSelected(lv_obj_t* object, lv_event_t event);
 
       private:
-        DisplayApp* app;
         Pinetime::Controllers::Settings& settingsController;
 
         static constexpr std::array<Option, 8> options = {{
diff --git a/src/heartratetask/HeartRateTask.cpp b/src/heartratetask/HeartRateTask.cpp
index 3ee04be9..1d1f7952 100644
--- a/src/heartratetask/HeartRateTask.cpp
+++ b/src/heartratetask/HeartRateTask.cpp
@@ -29,7 +29,7 @@ void HeartRateTask::Work() {
   int lastBpm = 0;
 
   while (true) {
-    auto delay = CurrentTaskDelay();
+    TickType_t delay = CurrentTaskDelay();
     Messages msg;
 
     if (xQueueReceive(messageQueue, &msg, delay) == pdTRUE) {
@@ -160,34 +160,34 @@ void HeartRateTask::HandleSensorData(int* lastBpm) {
   }
 }
 
-int HeartRateTask::CurrentTaskDelay() {
+TickType_t HeartRateTask::CurrentTaskDelay() {
   switch (state) {
     case States::Measuring:
     case States::BackgroundMeasuring:
       return ppg.deltaTms;
     case States::Running:
-      return 100;
+      return 100 * pdMS_TO_TICKS;
     case States::BackgroundWaiting:
-      return 10000;
+      return 10000 * pdMS_TO_TICKS;
     default:
       return portMAX_DELAY;
   }
 }
 
-uint32_t HeartRateTask::GetHeartRateBackgroundMeasurementIntervalInTicks() {
+TickType_t HeartRateTask::GetHeartRateBackgroundMeasurementIntervalInTicks() {
   switch (settings.GetHeartRateBackgroundMeasurementInterval()) {
     case Pinetime::Controllers::Settings::HeartRateBackgroundMeasurementInterval::TenSeconds:
-      return 10 * 1000;
+      return 10 * pdMS_TO_TICKS;
     case Pinetime::Controllers::Settings::HeartRateBackgroundMeasurementInterval::ThirtySeconds:
-      return 30 * 1000;
+      return 30 * pdMS_TO_TICKS;
     case Pinetime::Controllers::Settings::HeartRateBackgroundMeasurementInterval::OneMinute:
-      return 60 * 1000;
+      return 60 * pdMS_TO_TICKS;
     case Pinetime::Controllers::Settings::HeartRateBackgroundMeasurementInterval::FiveMinutes:
-      return 5 * 60 * 1000;
+      return 5 * 60 * pdMS_TO_TICKS;
     case Pinetime::Controllers::Settings::HeartRateBackgroundMeasurementInterval::TenMinutes:
-      return 10 * 60 * 1000;
+      return 10 * 60 * pdMS_TO_TICKS;
     case Pinetime::Controllers::Settings::HeartRateBackgroundMeasurementInterval::ThirtyMinutes:
-      return 30 * 60 * 1000;
+      return 30 * 60 * pdMS_TO_TICKS;
     default:
       return 0;
   }
@@ -201,4 +201,4 @@ bool HeartRateTask::IsContinuosModeActivated() {
 bool HeartRateTask::IsBackgroundMeasurementActivated() {
   return settings.GetHeartRateBackgroundMeasurementInterval() !=
          Pinetime::Controllers::Settings::HeartRateBackgroundMeasurementInterval::Off;
-}
\ No newline at end of file
+}
diff --git a/src/heartratetask/HeartRateTask.h b/src/heartratetask/HeartRateTask.h
index 0361c2ec..5321363b 100644
--- a/src/heartratetask/HeartRateTask.h
+++ b/src/heartratetask/HeartRateTask.h
@@ -5,7 +5,7 @@
 #include <components/heartrate/Ppg.h>
 #include "components/settings/Settings.h"
 
-#define DURATION_UNTIL_BACKGROUND_MEASURMENT_IS_STOPPED 30 * 1000 // 30 seconds assuming 1 Hz
+#define DURATION_UNTIL_BACKGROUND_MEASURMENT_IS_STOPPED 30 * pdMS_TO_TICKS
 
 namespace Pinetime {
   namespace Drivers {
@@ -37,9 +37,9 @@ namespace Pinetime {
 
       void HandleBackgroundWaiting();
       void HandleSensorData(int* lastBpm);
-      int CurrentTaskDelay();
+      TickType_t CurrentTaskDelay();
 
-      uint32_t GetHeartRateBackgroundMeasurementIntervalInTicks();
+      TickType_t GetHeartRateBackgroundMeasurementIntervalInTicks();
       bool IsContinuosModeActivated();
       bool IsBackgroundMeasurementActivated();