diff --git a/duoqin/files/Vendor_0001_Product_0001_Version_0100.kl b/duoqin/files/Vendor_0001_Product_0001_Version_0100.kl
index d0a9308..41f7f83 100644
--- a/duoqin/files/Vendor_0001_Product_0001_Version_0100.kl
+++ b/duoqin/files/Vendor_0001_Product_0001_Version_0100.kl
@@ -1 +1 @@
-key 139   ALT_LEFT
\ No newline at end of file
+key 139   DELETE
\ No newline at end of file
diff --git a/duoqin/files/gpio-keys.idc b/duoqin/files/gpio-keys.idc
deleted file mode 100644
index 0f98be1..0000000
--- a/duoqin/files/gpio-keys.idc
+++ /dev/null
@@ -1,6 +0,0 @@
-touch.deviceType = touchScreen
-touch.orientationAware = 1
-
-device.internal = 1
-keyboard.layout = gpio-keys
-keyboard.characterMap = gpio-keys
diff --git a/duoqin/files/gpio-keys.kcm b/duoqin/files/gpio-keys.kcm
deleted file mode 100644
index c0a3476..0000000
--- a/duoqin/files/gpio-keys.kcm
+++ /dev/null
@@ -1 +0,0 @@
-type SPECIAL_FUNCTION
\ No newline at end of file