diff --git a/examples/cocoa/CocoaAppDelegate.mm b/examples/cocoa/CocoaAppDelegate.mm
index a08e5b2c6..c0bd8dc70 100644
--- a/examples/cocoa/CocoaAppDelegate.mm
+++ b/examples/cocoa/CocoaAppDelegate.mm
@@ -39,7 +39,7 @@
 // Our PIMPL
 struct SFMLmainWindow
 {
-    SFMLmainWindow(sf::WindowHandle win) : renderWindow(win), text(font), sprite(logo), background(sf::Color::Blue)
+    SFMLmainWindow(sf::WindowHandle win) : renderWindow(win)
     {
         std::filesystem::path resPath = [[[NSBundle mainBundle] resourcePath] tostdstring];
         if (!logo.loadFromFile(resPath / "logo.png"))
@@ -59,10 +59,10 @@ struct SFMLmainWindow
 
     sf::RenderWindow renderWindow;
     sf::Font         font;
-    sf::Text         text;
+    sf::Text         text{font};
     sf::Texture      logo;
-    sf::Sprite       sprite;
-    sf::Color        background;
+    sf::Sprite       sprite{logo};
+    sf::Color        background{sf::Color::Blue};
 };
 
 // Private stuff
diff --git a/src/SFML/Window/Unix/WindowImplX11.cpp b/src/SFML/Window/Unix/WindowImplX11.cpp
index 6c069061c..2dc02b383 100644
--- a/src/SFML/Window/Unix/WindowImplX11.cpp
+++ b/src/SFML/Window/Unix/WindowImplX11.cpp
@@ -466,7 +466,6 @@ WindowImplX11::WindowImplX11(WindowHandle handle) : m_isExternal(true)
 
 ////////////////////////////////////////////////////////////
 WindowImplX11::WindowImplX11(VideoMode mode, const String& title, unsigned long style, const ContextSettings& settings) :
-m_isExternal(false),
 m_fullscreen((style & Style::Fullscreen) != 0),
 m_cursorGrabbed(m_fullscreen)
 {
diff --git a/src/SFML/Window/Unix/WindowImplX11.hpp b/src/SFML/Window/Unix/WindowImplX11.hpp
index 59281046e..071755fd6 100644
--- a/src/SFML/Window/Unix/WindowImplX11.hpp
+++ b/src/SFML/Window/Unix/WindowImplX11.hpp
@@ -325,7 +325,7 @@ private:
     int        m_screen;         ///< Screen identifier
     XIM        m_inputMethod{};  ///< Input method linked to the X display
     XIC        m_inputContext{}; ///< Input context used to get unicode input in our window
-    bool       m_isExternal;     ///< Tell whether the window has been created externally or by SFML
+    bool       m_isExternal{};   ///< Tell whether the window has been created externally or by SFML
     RRMode     m_oldVideoMode{}; ///< Video mode in use before we switch to fullscreen
     RRCrtc     m_oldRRCrtc{};    ///< RRCrtc in use before we switch to fullscreen
     ::Cursor   m_hiddenCursor{}; ///< As X11 doesn't provide cursor hiding, we must create a transparent one