diff --git a/src/SFML/Window/WindowImpl.hpp b/src/SFML/Window/WindowImpl.hpp
index 1cf6ddf11..909186196 100644
--- a/src/SFML/Window/WindowImpl.hpp
+++ b/src/SFML/Window/WindowImpl.hpp
@@ -47,7 +47,6 @@
 namespace sf
 {
 class String;
-class WindowListener;
 
 namespace priv
 {