diff --git a/src/SFML/Window/macOS/JoystickImpl.cpp b/src/SFML/Window/macOS/JoystickImpl.cpp
index 8155096ba..87d776182 100644
--- a/src/SFML/Window/macOS/JoystickImpl.cpp
+++ b/src/SFML/Window/macOS/JoystickImpl.cpp
@@ -38,10 +38,6 @@
 
 namespace
 {
-bool joystickButtonSortPredicate(IOHIDElementRef b1, IOHIDElementRef b2)
-{
-    return IOHIDElementGetUsage(b1) < IOHIDElementGetUsage(b2);
-}
 
 // Convert a CFStringRef to std::string
 std::string stringFromCFString(CFStringRef cfString)
@@ -320,7 +316,9 @@ bool JoystickImpl::open(unsigned int index)
 
     // Ensure that the buttons will be indexed in the same order as their
     // HID Usage (assigned by manufacturer and/or a driver).
-    std::sort(m_buttons.begin(), m_buttons.end(), joystickButtonSortPredicate);
+    std::sort(m_buttons.begin(),
+              m_buttons.end(),
+              [](IOHIDElementRef b1, IOHIDElementRef b2) { return IOHIDElementGetUsage(b1) < IOHIDElementGetUsage(b2); });
 
     // Retain all these objects for personal use
     for (IOHIDElementRef iohidElementRef : m_buttons)