diff --git a/src/video/cocoa/event.mm b/src/video/cocoa/event.mm
index 1728a52c69..9302f13c8c 100644
--- a/src/video/cocoa/event.mm
+++ b/src/video/cocoa/event.mm
@@ -47,6 +47,7 @@
 #include "../../blitter/factory.hpp"
 #include "../../gfx_func.h"
 #include "../../network/network.h"
+#include "../../core/random_func.hpp"
 
 
 /* Right Mouse Button Emulation enum */