diff --git a/src/gui_mac.c b/src/gui_mac.c
index 39f9ba5..dea648a 100644
--- a/src/gui_mac.c
+++ b/src/gui_mac.c
@@ -3726,6 +3726,12 @@
     return gui_get_color_cmn(name);
 }
 
+    guicolor_T
+gui_mch_get_rgb_color(int r, int g, int b)
+{
+    return gui_get_rgb_color_cmn(r, g, b);
+}
+
 /*
  * Set the current text foreground color.
  */