diff --git a/src/SFML/Window/macOS/cg_sf_conversion.hpp b/src/SFML/Window/macOS/cg_sf_conversion.hpp
index 1b4e8577e..69539feff 100644
--- a/src/SFML/Window/macOS/cg_sf_conversion.hpp
+++ b/src/SFML/Window/macOS/cg_sf_conversion.hpp
@@ -43,25 +43,10 @@ namespace sf::priv
 ////////////////////////////////////////////////////////////
 unsigned int modeBitsPerPixel(CGDisplayModeRef mode);
 
-////////////////////////////////////////////////////////////
-/// \brief Get bpp for all OS X version
-///
-/// This function use only non-deprecated way to get the
-/// display bits per pixel information for a given display id.
-///
-////////////////////////////////////////////////////////////
-unsigned int displayBitsPerPixel(CGDirectDisplayID displayId);
-
 ////////////////////////////////////////////////////////////
 /// \brief Convert a Quartz video mode into a sf::VideoMode object
 ///
 ////////////////////////////////////////////////////////////
 VideoMode convertCGModeToSFMode(CGDisplayModeRef cgmode);
 
-////////////////////////////////////////////////////////////
-/// \brief Convert a sf::VideoMode object into a Quartz video mode
-///
-////////////////////////////////////////////////////////////
-CGDisplayModeRef convertSFModeToCGMode(VideoMode sfmode);
-
 } // namespace sf::priv
diff --git a/src/SFML/Window/macOS/cg_sf_conversion.mm b/src/SFML/Window/macOS/cg_sf_conversion.mm
index 14ad854e9..c36564e2a 100644
--- a/src/SFML/Window/macOS/cg_sf_conversion.mm
+++ b/src/SFML/Window/macOS/cg_sf_conversion.mm
@@ -29,8 +29,6 @@
 #import <SFML/Window/macOS/Scaling.h>
 #include <SFML/Window/macOS/cg_sf_conversion.hpp>
 
-#include <SFML/System/Err.hpp>
-
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 
 namespace sf::priv
@@ -57,22 +55,6 @@ unsigned int modeBitsPerPixel(CGDisplayModeRef mode)
 }
 
 
-////////////////////////////////////////////////////////////
-unsigned int displayBitsPerPixel(CGDirectDisplayID displayId)
-{
-    // Get the display mode.
-    CGDisplayModeRef mode = CGDisplayCopyDisplayMode(displayId);
-
-    // Get bpp for the mode.
-    const auto bpp = modeBitsPerPixel(mode);
-
-    // Clean up Memory.
-    CGDisplayModeRelease(mode);
-
-    return bpp;
-}
-
-
 ////////////////////////////////////////////////////////////
 VideoMode convertCGModeToSFMode(CGDisplayModeRef cgmode)
 {