diff --git a/uisimulator/x11/button-x11.c b/uisimulator/x11/button-x11.c
index e3953a0782..a359098eb5 100644
--- a/uisimulator/x11/button-x11.c
+++ b/uisimulator/x11/button-x11.c
@@ -21,6 +21,9 @@
 
 #include "X11/keysym.h"
 
+static int release_mask;
+static int repeat_mask;
+
 /*
  *Initialize buttons
  */
@@ -28,6 +31,20 @@ void button_init()
 {
 }
 
+int button_set_repeat(int newmask)
+{
+    int oldmask = repeat_mask;
+    repeat_mask = newmask;
+    return oldmask;
+}
+
+int button_set_release(int newmask)
+{
+    int oldmask = release_mask;
+    release_mask = newmask;
+    return oldmask;
+}
+
 /*
  * Translate X keys to Recorder keys
  *