diff --git a/src/Menu.cpp b/src/Menu.cpp
index ef55194..c1148b0 100644
--- a/src/Menu.cpp
+++ b/src/Menu.cpp
@@ -167,13 +167,13 @@ unsigned int Menu::getLocationOfFirstItem() const
            static_cast<unsigned int>(items_.size()) * getItemHeight() / 2;
 }
 
-unsigned int Menu::getItemWidth() const
+int Menu::getItemWidth() const
 {
     return std::max(screen_.getWidth() / 3,
                     screen_.getBitmapWidth(ResourceType::MENU_ITEM));
 }
 
-unsigned int Menu::getItemHeight() const
+int Menu::getItemHeight() const
 {
     return std::max(screen_.getHeight() / 10,
                     screen_.getBitmapHeight(ResourceType::MENU_ITEM));
diff --git a/src/Menu.h b/src/Menu.h
index 264f433..1ff331e 100644
--- a/src/Menu.h
+++ b/src/Menu.h
@@ -41,9 +41,9 @@ class Menu final
 
     unsigned int getLocationOfFirstItem() const;
 
-    unsigned int getItemWidth() const;
+    int getItemWidth() const;
 
-    unsigned int getItemHeight() const;
+    int getItemHeight() const;
 
     UserChoice getUserChoice();
 
diff --git a/src/Screen.cpp b/src/Screen.cpp
index bc6b333..ec45e6b 100644
--- a/src/Screen.cpp
+++ b/src/Screen.cpp
@@ -130,32 +130,28 @@ void Screen::clearScreenWithBlack()
 
 void Screen::updateSize()
 {
-    width_ = static_cast<unsigned int>(
-        ::al_get_display_width(::al_get_current_display()));
-    height_ = static_cast<unsigned int>(
-        ::al_get_display_height(::al_get_current_display()));
+    width_ = ::al_get_display_width(::al_get_current_display());
+    height_ = ::al_get_display_height(::al_get_current_display());
 
     Config::getInstance().screenSizeChanged(getWidth(), getHeight());
 }
 
-unsigned int Screen::getWidth() const { return width_; }
+int Screen::getWidth() const { return width_; }
 
-unsigned int Screen::getHeight() const { return height_; }
+int Screen::getHeight() const { return height_; }
 
 unsigned int Screen::getCenterX() const { return width_ / 2; }
 
 unsigned int Screen::getCenterY() const { return height_ / 2; }
 
-unsigned int Screen::getBitmapWidth(ResourceType resourceType) const
+int Screen::getBitmapWidth(ResourceType resourceType) const
 {
-    return static_cast<unsigned int>(
-        ::al_get_bitmap_width(resources_.getBitmap(resourceType)));
+    return ::al_get_bitmap_width(resources_.getBitmap(resourceType));
 }
 
-unsigned int Screen::getBitmapHeight(ResourceType resourceType) const
+int Screen::getBitmapHeight(ResourceType resourceType) const
 {
-    return static_cast<unsigned int>(
-        ::al_get_bitmap_height(resources_.getBitmap(resourceType)));
+    return ::al_get_bitmap_height(resources_.getBitmap(resourceType));
 }
 
 void Screen::refresh() { ::al_flip_display(); }
diff --git a/src/Screen.h b/src/Screen.h
index 1b2afd6..13a6ec6 100644
--- a/src/Screen.h
+++ b/src/Screen.h
@@ -46,9 +46,9 @@ class Screen
 
     unsigned int getCenterY() const;
 
-    unsigned int getBitmapWidth(ResourceType resourceType) const;
+    int getBitmapWidth(ResourceType resourceType) const;
 
-    unsigned int getBitmapHeight(ResourceType resourceType) const;
+    int getBitmapHeight(ResourceType resourceType) const;
 
     static void refresh();
 
@@ -60,16 +60,16 @@ class Screen
 
     void useWindowedMode();
 
-    unsigned int getWidth() const;
+    int getWidth() const;
 
-    unsigned int getHeight() const;
+    int getHeight() const;
 
 private:
     void updateSize();
 
     Resources resources_;
 
-    unsigned int width_;
-    unsigned int height_;
+    int width_;
+    int height_;
     ALLEGRO_FONT* font_;
 };