diff --git a/R/isNodeAlive.R b/R/isNodeAlive.R
index b20a3588..ef8caf4e 100644
--- a/R/isNodeAlive.R
+++ b/R/isNodeAlive.R
@@ -41,6 +41,11 @@ isNodeAlive <- function(x, ...) UseMethod("isNodeAlive")
 #' @export
 isNodeAlive.default <- function(x, ...) NA
 
+#' @export
+isNodeAlive.SOCK0node <- function(x, ...) {
+  isConnectionValid(x$con)
+}  
+
 #' @export
 isNodeAlive.RichSOCKnode <- function(x, timeout = 0.0, ...) {
   debug <- isTRUE(getOption("parallelly.debug"))