diff --git a/src/gui_mac.c b/src/gui_mac.c
index 06f9204..b2e4d4b 100644
--- a/src/gui_mac.c
+++ b/src/gui_mac.c
@@ -5120,6 +5120,12 @@
     return FALSE;
 }
 
+    int
+gui_mch_is_blink_off(void)
+{
+    return FALSE;
+}
+
 /*
  * Cursor blink functions.
  *