diff --git a/install.sh b/install.sh
index e76368a..9430dbd 100755
--- a/install.sh
+++ b/install.sh
@@ -55,7 +55,7 @@ if [ ! -f "/boot/overlays/seeed-4mic-voicecard.dtbo" ] && [ ! -f "/lib/modules/$
   install_module "./" "seeed-voicecard"
   cp seeed-2mic-voicecard.dtbo /boot/overlays
   cp seeed-4mic-voicecard.dtbo /boot/overlays
-  cp ac108_plugin/libasound_module_pcm_ac108.so   /usr/lib/arm-linux-gnueabihf/alsa-lib/  
+  install -D ac108_plugin/libasound_module_pcm_ac108.so   /usr/lib/arm-linux-gnueabihf/alsa-lib/libasound_module_pcm_ac108.so
 else
   echo "card driver already installed"
 fi