diff --git a/R/pb.R b/R/pb.R
index 92f07d2..c971f49 100644
--- a/R/pb.R
+++ b/R/pb.R
@@ -4,7 +4,7 @@
 #' Makes the object spawn a progress bar in response to indexing with `[[`
 #' operator. Intended to be used with most iterators in R, e.g.:
 #' [base::lapply()] and some of its cousins, [base::Reduce()],
-#' [parallel::mclapply()], [purrr::map()], [foreach::foreach()]...
+#' [plyr::llply()], [purrr::map()], [foreach::foreach()]...
 #'
 #' @param object `ANY`\cr
 #'  An iterable that should spawn a progress bar.
diff --git a/man/pb.Rd b/man/pb.Rd
index 4f71e85..cc52f4a 100644
--- a/man/pb.Rd
+++ b/man/pb.Rd
@@ -28,7 +28,7 @@ progress bar display in response to indexing.
 Makes the object spawn a progress bar in response to indexing with \code{[[}
 operator. Intended to be used with most iterators in R, e.g.:
 \code{\link[base:lapply]{base::lapply()}} and some of its cousins, \code{\link[base:funprog]{base::Reduce()}},
-\code{\link[parallel:mcdummies]{parallel::mclapply()}}, \code{\link[purrr:map]{purrr::map()}}, \code{\link[foreach:foreach]{foreach::foreach()}}...
+\code{\link[plyr:llply]{plyr::llply()}}, \code{\link[purrr:map]{purrr::map()}}, \code{\link[foreach:foreach]{foreach::foreach()}}...
 }
 \examples{
 result <- lapply(pb(6:20), gmp::factorize)
diff --git a/tests/testthat/test-pb-methods.R b/tests/testthat/test-pb-methods.R
new file mode 100644
index 0000000..2e40918
--- /dev/null
+++ b/tests/testthat/test-pb-methods.R
@@ -0,0 +1,16 @@
+test_that("no progress bar call is being made when using str()", {
+  x <- pb(seq(10))
+  pre_val <- aurrera:::.PROGRESS_BAR$getVal()
+  suppress_output(str(x))
+  expect_equal(
+    aurrera:::.PROGRESS_BAR$getVal(),
+    pre_val
+  )
+})
+
+test_that("`aurrera_iter` class is preserved when using c()", {
+  x <- pb(seq(10))
+  expect_vector(c(x, 17:20),
+                ptype = pb(1L),
+                size = 14)
+})
diff --git a/tests/testthat/test-pb.R b/tests/testthat/test-pb.R
index 7b39031..b7873b3 100644
--- a/tests/testthat/test-pb.R
+++ b/tests/testthat/test-pb.R
@@ -44,13 +44,18 @@ test_that("purrr::map_chr() returns correct value", {
 # PARALLEL::MCLAPPLY ----------------------------------------------------------
 test_that("pb() prints progress bar inside parallel::mclapply()", {
   expect_equal(
-    capture_output(parallel::mclapply(pb(x), identity), width = width),
+    capture_output(
+      parallel::mclapply(pb(x), identity, mc.preschedule = FALSE),
+      width = width
+    ),
     bar
   )
 })
 
 test_that("parallel::mclapply() returns correct value", {
-  suppress_output(ret <- parallel::mclapply(pb(x), identity))
+  suppress_output(
+    ret <- parallel::mclapply(pb(x), identity, mc.preschedule = FALSE)
+  )
   expect_equal(ret, x)
 })