diff --git a/os/debian/postinst b/os/debian/postinst
index c3f9cf4ca8ce9d6f0bb9a471a0b91d142ae5aad0..a34fa9167a844326f146f7874d928789ab924ec2 100755
--- a/os/debian/postinst
+++ b/os/debian/postinst
@@ -16,8 +16,7 @@ DAP_CFG="$DAP_PREFIX/etc/$DAP_APP_NAME.cfg"
 
 # Init node config
 if [ -e "$DAP_CFG" ]; then
-    #DAP_CFG="$DAP_PREFIX/etc/$DAP_APP_NAME.cfg.dpkg-new"
-    mv "$DAP_CFG" "$DAP_CFG".old
+    DAP_CFG="$DAP_PREFIX/etc/$DAP_APP_NAME.cfg.dpkg-new"
 else
     DAP_CFG="$DAP_PREFIX/etc/$DAP_APP_NAME.cfg"
 fi
@@ -177,9 +176,7 @@ if [ "$RET" = "true" ]; then
     DAP_CFG_NET_TPL="$DAP_PREFIX/share/configs/network/$NET_NAME.cfg.tpl"
     DAP_NET_CFG=""
     if [ -e "$DAP_CFG_NET" ]; then
-        mv "$DAP_CFG_NET" "$DAP_CFG_NET".old
-        #DAP_NET_CFG="$DAP_PREFIX/etc/network/$NET_NAME.cfg.dpkg-new"
-        DAP_NET_CFG="$DAP_PREFIX/etc/network/$NET_NAME.cfg"
+        DAP_NET_CFG="$DAP_PREFIX/etc/network/$NET_NAME.cfg.dpkg-new"
     else
         DAP_NET_CFG="$DAP_PREFIX/etc/network/$NET_NAME.cfg"
     fi