diff --git a/src/SFML/Window/Unix/CursorImpl.cpp b/src/SFML/Window/Unix/CursorImpl.cpp
index 1cfcbf29c..8606c15c8 100644
--- a/src/SFML/Window/Unix/CursorImpl.cpp
+++ b/src/SFML/Window/Unix/CursorImpl.cpp
@@ -204,7 +204,7 @@ bool CursorImpl::loadFromSystem(Cursor::Type type)
 
 
 ////////////////////////////////////////////////////////////
-bool CursorImpl::isColorCursorSupported()
+bool CursorImpl::isColorCursorSupported() const
 {
     return XcursorSupportsARGB(m_display.get());
 }
diff --git a/src/SFML/Window/Unix/WindowImplX11.cpp b/src/SFML/Window/Unix/WindowImplX11.cpp
index 05c587c21..576c59c58 100644
--- a/src/SFML/Window/Unix/WindowImplX11.cpp
+++ b/src/SFML/Window/Unix/WindowImplX11.cpp
@@ -2080,7 +2080,7 @@ bool WindowImplX11::processEvent(XEvent& windowEvent)
 
 
 ////////////////////////////////////////////////////////////
-bool WindowImplX11::checkXRandR()
+bool WindowImplX11::checkXRandR() const
 {
     // Check if the XRandR extension is present
     int version = 0;
@@ -2095,7 +2095,7 @@ bool WindowImplX11::checkXRandR()
 
 
 ////////////////////////////////////////////////////////////
-RROutput WindowImplX11::getOutputPrimary(::Window& rootWindow, XRRScreenResources* res)
+RROutput WindowImplX11::getOutputPrimary(::Window& rootWindow, XRRScreenResources* res) const
 {
     const RROutput output = XRRGetOutputPrimary(m_display.get(), rootWindow);
 
@@ -2108,7 +2108,7 @@ RROutput WindowImplX11::getOutputPrimary(::Window& rootWindow, XRRScreenResource
 
 
 ////////////////////////////////////////////////////////////
-Vector2i WindowImplX11::getPrimaryMonitorPosition()
+Vector2i WindowImplX11::getPrimaryMonitorPosition() const
 {
     Vector2i monitorPosition;