diff --git a/glfw/cocoa_window.m b/glfw/cocoa_window.m
index 831fae3db..a0e4d285e 100644
--- a/glfw/cocoa_window.m
+++ b/glfw/cocoa_window.m
@@ -1673,7 +1673,7 @@ - (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
 }
 
 int
-_glfwPlatformRequestDropData(_GLFWwindow *window UNUSED, const char *mime) {
+_glfwPlatformRequestDropData(_GLFWwindow *window, const char *mime) {
     NSPasteboard* pasteboard = window->ns.drop_data.pasteboard;
     if (!pasteboard) return EINVAL;
     GLFWid wid = window->id;