diff --git a/install.sh b/install.sh
index 4d9beeb..5da2bf4 100755
--- a/install.sh
+++ b/install.sh
@@ -188,10 +188,12 @@ sed -i -e 's:#dtparam=i2c_arm=on:dtparam=i2c_arm=on:g'  $CONFIG || true
 grep -q "^dtoverlay=i2s-mmap$" $CONFIG || \
   echo "dtoverlay=i2s-mmap" >> $CONFIG
 
-
 grep -q "^dtparam=i2s=on$" $CONFIG || \
   echo "dtparam=i2s=on" >> $CONFIG
 
+grep -q "^dtoverlay=seeed-2mic-voicecard$" $CONFIG || \
+  echo "dtoverlay=seeed-2mic-voicecard" >> $CONFIG
+
 #install config files
 mkdir /etc/voicecard || true
 cp *.conf /etc/voicecard