diff --git a/examples/X11/X11.cpp b/examples/X11/X11.cpp
index 9fd06f63ec..08ab24c155 100644
--- a/examples/X11/X11.cpp
+++ b/examples/X11/X11.cpp
@@ -3,7 +3,6 @@
 // Headers
 ////////////////////////////////////////////////////////////
 #include <SFML/Window.hpp>
-#include <SFML/System/Err.hpp>
 
 #define GLAD_GL_IMPLEMENTATION
 #include "gl.h"
diff --git a/include/SFML/Graphics/Font.hpp b/include/SFML/Graphics/Font.hpp
index f5e1d9b697..8d47ae8c14 100644
--- a/include/SFML/Graphics/Font.hpp
+++ b/include/SFML/Graphics/Font.hpp
@@ -32,8 +32,6 @@
 #include <SFML/Graphics/Glyph.hpp>
 #include <SFML/Graphics/Texture.hpp>
 #include <SFML/Graphics/Rect.hpp>
-#include <SFML/System/Vector2.hpp>
-#include <SFML/System/String.hpp>
 #include <map>
 #include <string>
 #include <vector>
diff --git a/src/SFML/Graphics/RenderTextureImplDefault.cpp b/src/SFML/Graphics/RenderTextureImplDefault.cpp
index c3a700e313..17d9cf86bb 100644
--- a/src/SFML/Graphics/RenderTextureImplDefault.cpp
+++ b/src/SFML/Graphics/RenderTextureImplDefault.cpp
@@ -29,7 +29,6 @@
 #include <SFML/Graphics/GLCheck.hpp>
 #include <SFML/Graphics/TextureSaver.hpp>
 #include <SFML/Window/Context.hpp>
-#include <SFML/System/Err.hpp>
 
 
 namespace sf
diff --git a/src/SFML/Graphics/Shape.cpp b/src/SFML/Graphics/Shape.cpp
index ccf3ddf30c..50a7ab0462 100644
--- a/src/SFML/Graphics/Shape.cpp
+++ b/src/SFML/Graphics/Shape.cpp
@@ -28,7 +28,6 @@
 #include <SFML/Graphics/Shape.hpp>
 #include <SFML/Graphics/RenderTarget.hpp>
 #include <SFML/Graphics/Texture.hpp>
-#include <SFML/System/Err.hpp>
 #include <cmath>
 
 
diff --git a/src/SFML/Window/FreeBSD/JoystickImpl.cpp b/src/SFML/Window/FreeBSD/JoystickImpl.cpp
index 28f44c3cfd..22c78eac77 100644
--- a/src/SFML/Window/FreeBSD/JoystickImpl.cpp
+++ b/src/SFML/Window/FreeBSD/JoystickImpl.cpp
@@ -27,7 +27,6 @@
 // Headers
 ////////////////////////////////////////////////////////////
 #include <SFML/Window/JoystickImpl.hpp>
-#include <SFML/System/Err.hpp>
 #include <sys/stat.h>
 #include <dirent.h>
 #include <fcntl.h>
diff --git a/src/SFML/Window/JoystickImpl.hpp b/src/SFML/Window/JoystickImpl.hpp
index 7bc2a23196..2c0b6ffab7 100644
--- a/src/SFML/Window/JoystickImpl.hpp
+++ b/src/SFML/Window/JoystickImpl.hpp
@@ -30,7 +30,6 @@
 ////////////////////////////////////////////////////////////
 #include <SFML/Config.hpp>
 #include <SFML/Window/Joystick.hpp>
-#include <SFML/System/String.hpp>
 #include <algorithm>
 
 
diff --git a/src/SFML/Window/NetBSD/JoystickImpl.cpp b/src/SFML/Window/NetBSD/JoystickImpl.cpp
index ed8a9ead08..b9b3899494 100644
--- a/src/SFML/Window/NetBSD/JoystickImpl.cpp
+++ b/src/SFML/Window/NetBSD/JoystickImpl.cpp
@@ -27,7 +27,6 @@
 // Headers
 ////////////////////////////////////////////////////////////
 #include <SFML/Window/JoystickImpl.hpp>
-#include <SFML/System/Err.hpp>
 #include <sys/stat.h>
 #include <dirent.h>
 #include <fcntl.h>
diff --git a/src/SFML/Window/Unix/InputImpl.cpp b/src/SFML/Window/Unix/InputImpl.cpp
index f404d6e0fd..fd48bca1fe 100644
--- a/src/SFML/Window/Unix/InputImpl.cpp
+++ b/src/SFML/Window/Unix/InputImpl.cpp
@@ -28,7 +28,6 @@
 #include <SFML/Window/Window.hpp> // important to be included first (conflict with None)
 #include <SFML/Window/Unix/InputImpl.hpp>
 #include <SFML/Window/Unix/Display.hpp>
-#include <SFML/System/Err.hpp>
 #include <X11/Xlib.h>
 #include <X11/keysym.h>
 
diff --git a/src/SFML/Window/Win32/JoystickImpl.hpp b/src/SFML/Window/Win32/JoystickImpl.hpp
index d2111dc86f..3377a9b918 100644
--- a/src/SFML/Window/Win32/JoystickImpl.hpp
+++ b/src/SFML/Window/Win32/JoystickImpl.hpp
@@ -39,7 +39,6 @@
 #define DIRECTINPUT_VERSION 0x0800
 #include <SFML/Window/Joystick.hpp>
 #include <SFML/Window/JoystickImpl.hpp>
-#include <SFML/System/String.hpp>
 #include <windows.h>
 #include <mmsystem.h>
 #include <dinput.h>