diff --git a/src/displayapp/screens/settings/SettingDisplay.cpp b/src/displayapp/screens/settings/SettingDisplay.cpp
index 9e835f61..a92d76fe 100644
--- a/src/displayapp/screens/settings/SettingDisplay.cpp
+++ b/src/displayapp/screens/settings/SettingDisplay.cpp
@@ -14,6 +14,8 @@ namespace {
   }
 }
 
+constexpr std::array<uint16_t, 4> SettingDisplay::options;
+
 SettingDisplay::SettingDisplay(Pinetime::Applications::DisplayApp* app, Pinetime::Controllers::Settings& settingsController)
   : Screen(app), settingsController {settingsController} {
 
diff --git a/src/displayapp/screens/settings/SettingDisplay.h b/src/displayapp/screens/settings/SettingDisplay.h
index dba6b435..1309f8c1 100644
--- a/src/displayapp/screens/settings/SettingDisplay.h
+++ b/src/displayapp/screens/settings/SettingDisplay.h
@@ -19,9 +19,10 @@ namespace Pinetime {
         void UpdateSelected(lv_obj_t* object, lv_event_t event);
 
       private:
-        const std::array<uint16_t, 4> options = {5000, 15000, 20000, 30000};
+        static constexpr std::array<uint16_t, 4> options = {5000, 15000, 20000, 30000};
+
         Controllers::Settings& settingsController;
-        lv_obj_t* cbOption[4];
+        lv_obj_t* cbOption[options.size()];
       };
     }
   }
diff --git a/src/displayapp/screens/settings/SettingTimeFormat.cpp b/src/displayapp/screens/settings/SettingTimeFormat.cpp
index 52ce94ba..e65cb9e8 100644
--- a/src/displayapp/screens/settings/SettingTimeFormat.cpp
+++ b/src/displayapp/screens/settings/SettingTimeFormat.cpp
@@ -13,6 +13,8 @@ namespace {
   }
 }
 
+constexpr std::array<const char*, 2> SettingTimeFormat::options;
+
 SettingTimeFormat::SettingTimeFormat(Pinetime::Applications::DisplayApp* app, Pinetime::Controllers::Settings& settingsController)
   : Screen(app), settingsController {settingsController} {
 
@@ -41,7 +43,7 @@ SettingTimeFormat::SettingTimeFormat(Pinetime::Applications::DisplayApp* app, Pi
 
   for (unsigned int i = 0; i < options.size(); i++) {
     cbOption[i] = lv_checkbox_create(container1, nullptr);
-    lv_checkbox_set_text(cbOption[i], options[i].c_str());
+    lv_checkbox_set_text(cbOption[i], options[i]);
     cbOption[i]->user_data = this;
     lv_obj_set_event_cb(cbOption[i], event_handler);
 
diff --git a/src/displayapp/screens/settings/SettingTimeFormat.h b/src/displayapp/screens/settings/SettingTimeFormat.h
index 0113e35b..fa24eabe 100644
--- a/src/displayapp/screens/settings/SettingTimeFormat.h
+++ b/src/displayapp/screens/settings/SettingTimeFormat.h
@@ -19,10 +19,9 @@ namespace Pinetime {
         void UpdateSelected(lv_obj_t* object, lv_event_t event);
 
       private:
-        const std::array<std::string, 2> options = {" 12-hour", " 24-hour"};
-
+        static constexpr std::array<const char*, 2> options = {" 12-hour", " 24-hour"};
         Controllers::Settings& settingsController;
-        lv_obj_t* cbOption[2];
+        lv_obj_t* cbOption[options.size()];
       };
     }
   }
diff --git a/src/displayapp/screens/settings/SettingWatchFace.cpp b/src/displayapp/screens/settings/SettingWatchFace.cpp
index 8bb8759f..0166ae97 100644
--- a/src/displayapp/screens/settings/SettingWatchFace.cpp
+++ b/src/displayapp/screens/settings/SettingWatchFace.cpp
@@ -13,6 +13,8 @@ namespace {
   }
 }
 
+constexpr std::array<const char*, 3> SettingWatchFace::options;
+
 SettingWatchFace::SettingWatchFace(Pinetime::Applications::DisplayApp* app, Pinetime::Controllers::Settings& settingsController)
   : Screen(app), settingsController {settingsController} {
 
@@ -42,7 +44,7 @@ SettingWatchFace::SettingWatchFace(Pinetime::Applications::DisplayApp* app, Pine
 
   for (unsigned int i = 0; i < options.size(); i++) {
     cbOption[i] = lv_checkbox_create(container1, nullptr);
-    lv_checkbox_set_text(cbOption[i], options[i].c_str());
+    lv_checkbox_set_text(cbOption[i], options[i]);
     cbOption[i]->user_data = this;
     lv_obj_set_event_cb(cbOption[i], event_handler);
 
diff --git a/src/displayapp/screens/settings/SettingWatchFace.h b/src/displayapp/screens/settings/SettingWatchFace.h
index 8c6f653d..281c4bae 100644
--- a/src/displayapp/screens/settings/SettingWatchFace.h
+++ b/src/displayapp/screens/settings/SettingWatchFace.h
@@ -19,10 +19,10 @@ namespace Pinetime {
         void UpdateSelected(lv_obj_t* object, lv_event_t event);
 
       private:
-        const std::array<std::string, 3> options = {" Digital face", " Analog face", " PineTimeStyle"};
+        static constexpr std::array<const char*, 3> options = {" Digital face", " Analog face", " PineTimeStyle"};
         Controllers::Settings& settingsController;
 
-        lv_obj_t* cbOption[3];
+        lv_obj_t* cbOption[options.size()];
       };
     }
   }