diff --git a/install.sh b/install.sh
index 6693a27..e73d87e 100755
--- a/install.sh
+++ b/install.sh
@@ -260,28 +260,21 @@ udevadm control --reload-rules
 
 echo "i2c-dev" | tee /etc/modules-load.d/i2c-dev.conf >/dev/null
 
-CONFIG_FILE_DIFF=""
-if test -f "$CONF_FILE"; then
-    if test -f "$CONFIG_FILE_NAME"; then
-	    CONFIG_FILE_DIFF=$(diff <(grep -v '^#' $CONFIG_FILE_NAME) <(grep -v '^#' $CONF_FILE))
-    fi
-fi
-
-if [[ "$CONFIG_FILE_DIFF" != "" ]] || [[ -f "$CONF_FILE" ]]; then
+if [[ -f "$CONF_FILE" ]]; then
     read -r -p "In system remains config file from previous installation. Do you want replace this with default config file [y/N]" response
     case "$response" in [yY][eE][sS]|[yY])
         # default will be autocreated, so that is why remove
-	    rm -f $CONF_FILE
-	    if [[ $? != 0 ]]; then
-		    echo "$CONF_FILE cannot be removed correctly..."
-		    exit 1
-	    fi
+        rm -f $CONF_FILE
+        if [[ $? != 0 ]]; then
+            echo "$CONF_FILE cannot be removed correctly..."
+            exit 1
+        fi
         ;;
     *)
         ;;
     esac
 else
-  	echo "Installed default config which can be futher modified here:"
+    echo "Installed default config which can be futher modified here:"
     echo "$CONF_FILE"
 fi