diff --git a/frontend/platform/platform_apple.c b/frontend/platform/platform_apple.c
index f8a1b87960..aee24de426 100644
--- a/frontend/platform/platform_apple.c
+++ b/frontend/platform/platform_apple.c
@@ -24,6 +24,10 @@
 #include <stddef.h>
 #include <string.h>
 
+void apple_start_iteration(void);
+
+void apple_stop_iteration(void);
+
 static CFRunLoopObserverRef iterate_observer;
 
 static void do_iteration(void)