diff --git a/duoqin/files/mtk-kpd.kcm b/duoqin/files/mtk-kpd.kcm
index c3c3919..219559e 100644
--- a/duoqin/files/mtk-kpd.kcm
+++ b/duoqin/files/mtk-kpd.kcm
@@ -25,6 +25,13 @@ key DPAD_RIGHT {
 key BUTTON_X {
     base:                               fallback ENTER
     alt, meta:                          fallback VOLUME_MUTE
+    ctrl:                               fallback MUTE
+}
+
+key BUTTON_Z {
+    base:                               fallback CALL
+    alt, meta:                          fallback POWER
+    ctrl:                               fallback SYSRQ
 }
 
 key 0 {
diff --git a/duoqin/files/mtk-kpd.kl b/duoqin/files/mtk-kpd.kl
index 2662bc6..1830d24 100644
--- a/duoqin/files/mtk-kpd.kl
+++ b/duoqin/files/mtk-kpd.kl
@@ -17,7 +17,7 @@ key 108   DPAD_DOWN
 key 158   BUTTON_Y
 
 key 227   ALT_LEFT
-key 231   CALL
+key 231   BUTTON_Z
 
 key 352   BUTTON_X