diff --git a/ttyplay.c b/ttyplay.c
index b47cec0..e13e169 100644
--- a/ttyplay.c
+++ b/ttyplay.c
@@ -58,6 +58,10 @@
 #include "io.h"
 #include "stripgfx.h"
 
+#ifdef __MACH__
+typedef void (*sighandler_t)(int);
+#endif
+
 int stripped = NO_GRAPHICS;
 static int got_sigwinch = 0;