diff --git a/src/SFML/Window/Unix/WindowImplX11.cpp b/src/SFML/Window/Unix/WindowImplX11.cpp
index b845898c..59a0fbac 100644
--- a/src/SFML/Window/Unix/WindowImplX11.cpp
+++ b/src/SFML/Window/Unix/WindowImplX11.cpp
@@ -586,7 +586,7 @@ m_lastInputTime  (0)
     else
     {
         windowPosition.x = (DisplayWidth(m_display, m_screen) - static_cast<int>(mode.width))  / 2;
-        windowPosition.y = (DisplayWidth(m_display, m_screen) - static_cast<int>(mode.height)) / 2;
+        windowPosition.y = (DisplayHeight(m_display, m_screen) - static_cast<int>(mode.height)) / 2;
     }
 
     unsigned int width  = mode.width;