diff --git a/duoqin/files/mtk-kpd.kcm b/duoqin/files/mtk-kpd.kcm
index 25ea74d..1cffc03 100644
--- a/duoqin/files/mtk-kpd.kcm
+++ b/duoqin/files/mtk-kpd.kcm
@@ -1,12 +1,12 @@
 type FULL
 
-key BUTTON_Y {
-    base:                               fallback CALL
+key CALL {
+    base:                               CALL
     ctrl:                               fallback SYM
 }
 
-key BUTTON_X {
-    base:                               fallback BACK
+key BACK {
+    base:                               BACK
     fn:                                 fallback HOME
     ctrl:                               fallback APP_SWITCH
 }
diff --git a/duoqin/files/mtk-kpd.kl b/duoqin/files/mtk-kpd.kl
index 64d1f1b..45f9ca1 100644
--- a/duoqin/files/mtk-kpd.kl
+++ b/duoqin/files/mtk-kpd.kl
@@ -22,7 +22,7 @@ key 106   BUTTON_3
 key 108   BUTTON_4
 
 # BACK
-key 158   BUTTON_X
+key 158   BACK
 
 # CALL
 key 231   BUTTON_Y