diff --git a/DESCRIPTION b/DESCRIPTION
index 84a8c73e..fdfdf5fe 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,5 +1,5 @@
 Package: parallelly
-Version: 1.36.0-9015
+Version: 1.36.0-9016
 Title: Enhancing the 'parallel' Package
 Imports:
     parallel,
diff --git a/NEWS.md b/NEWS.md
index 74eca284..d399d8b5 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,10 +4,11 @@
 
  * `makeClusterPSOCK(nworkers)` gained protection against setting up
    too many localhost workers relative to number of available CPU
-   cores.  If `nworkers / availableCores()` greater than 1.0 (100%),
-   then a warning is produced.  If greater than 2.0 (200%), an error
-   is produced.  These limits can be configured by R option
-   `parallelly.maxWorkers.localhost`.
+   cores. If `nworkers / availableCores()` greater than 1.0 (100%),
+   then a warning is produced. If greater than 2.0 (200%), an error is
+   produced.  These limits can be configured by R option
+   `parallelly.maxWorkers.localhost`. These checks are skipped if
+   `nworkers` inherits from `AsIs`, e.g. `makeClusterPSOCK(I(16))`.
 
  
 ## Miscellaneous
diff --git a/R/availableCores.R b/R/availableCores.R
index 28a18d78..bd3e18b1 100644
--- a/R/availableCores.R
+++ b/R/availableCores.R
@@ -536,6 +536,8 @@ getNproc <- function(ignore = c("OMP_NUM_THREADS", "OMP_THREAD_LIMIT")) {
 
 
 checkNumberOfLocalWorkers <- function(workers) {
+  if (inherits(workers, "AsIs")) return()
+  
   rhos <- getOption("parallelly.maxWorkers.localhost", c(1.0, 2.0))
   if (length(rhos) == 0) return()
 
diff --git a/R/makeClusterPSOCK.R b/R/makeClusterPSOCK.R
index 7a3710de..852eda15 100644
--- a/R/makeClusterPSOCK.R
+++ b/R/makeClusterPSOCK.R
@@ -72,7 +72,8 @@ makeClusterPSOCK <- function(workers, makeNode = makeNodePSOCK, port = c("auto",
     if (length(workers) != 1L) {
       stopf("When numeric, argument 'workers' must be a single value: %s", length(workers))
     }
-    workers <- as.integer(workers)
+    
+    workers <- structure(as.integer(workers), class = class(workers))
     if (is.na(workers) || workers < 1L) {
       stopf("Number of 'workers' must be one or greater: %s", workers)
     }