diff --git a/gfx/drivers_context/cocoa_gl_ctx.m b/gfx/drivers_context/cocoa_gl_ctx.m
index 8c137375a0..a95478f59d 100644
--- a/gfx/drivers_context/cocoa_gl_ctx.m
+++ b/gfx/drivers_context/cocoa_gl_ctx.m
@@ -666,6 +666,7 @@ const gfx_ctx_driver_t gfx_ctx_cocoagl = {
    cocoagl_gfx_ctx_swap_interval,
    cocoagl_gfx_ctx_set_video_mode,
    cocoagl_gfx_ctx_get_video_size,
+   NULL, /* get_refresh_rate */
    NULL, /* get_video_output_size */
    NULL, /* get_video_output_prev */
    NULL, /* get_video_output_next */