diff --git a/NEWS.md b/NEWS.md
index 23ba19c0c4..bb1469d2ea 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -16,6 +16,10 @@
 
 1. Continued work to remove non-API C functions, [#6180](https://github.com/Rdatatable/data.table/issues/6180). Thanks Ivan Krylov for the PRs and for writing a clear and concise guide about the R API: https://aitap.codeberg.page/R-api/.
 
+2. The following in-progress deprecations have proceeded:
+
+   + Argument `logicalAsInt` to `fwrite()` has been removed.
+
 # data.table [v1.17.0](https://github.com/Rdatatable/data.table/milestone/34)  (20 Feb 2025)
 
 ## POTENTIALLY BREAKING CHANGES
diff --git a/R/fwrite.R b/R/fwrite.R
index 7e7da40c95..934046f35a 100644
--- a/R/fwrite.R
+++ b/R/fwrite.R
@@ -3,8 +3,7 @@ fwrite = function(x, file="", append=FALSE, quote="auto",
            sep2=c("","|",""), eol=if (.Platform$OS.type=="windows") "\r\n" else "\n",
            na="", dec=".", row.names=FALSE, col.names=TRUE,
            qmethod=c("double","escape"),
-           logical01=getOption("datatable.logical01", FALSE), # due to change to TRUE; see NEWS
-           logicalAsInt=NULL,
+           logical01=getOption("datatable.logical01", FALSE),
            scipen=getOption('scipen', 0L),
            dateTimeAs = c("ISO","squash","epoch","write.csv"),
            buffMB=8L, nThread=getDTthreads(verbose),
@@ -23,9 +22,6 @@ fwrite = function(x, file="", append=FALSE, quote="auto",
   compress = match.arg(compress)
   dateTimeAs = match.arg(dateTimeAs)
   dateTimeAs = chmatch(dateTimeAs, c("ISO", "squash", "epoch", "write.csv")) - 1L
-  if (!is.null(logicalAsInt)) {
-    stopf("logicalAsInt has been renamed logical01 for consistency with fread.")
-  }
   scipen = if (is.numeric(scipen)) as.integer(scipen) else 0L
   buffMB = as.integer(buffMB)
   nThread = as.integer(nThread)
diff --git a/inst/tests/tests.Rraw b/inst/tests/tests.Rraw
index 3e3efa3c3b..39917fd5ae 100644
--- a/inst/tests/tests.Rraw
+++ b/inst/tests/tests.Rraw
@@ -10933,7 +10933,7 @@ test(1736.03, fwrite(DT, sep2=c("",",","")), error="sep.*,.*sep2.*,.*must all be
 test(1736.04, fwrite(DT, sep2=c("","||","")), error="nchar.*sep2.*2")
 test(1736.05, capture.output(fwrite(DT, sep='|', sep2=c("c(",",",")"), logical01=FALSE)), c("A|B|C", "1|c(1,2,3,4,5,6,7,8,9,10)|c(s,t,u,v,w)",
  "2|c(15,16,17,18)|c(1.2,2.3,3.4,3.14159265358979,-9)", "3|c(7)|c(foo,bar)", "4|c(9,10)|c(TRUE,TRUE,FALSE)"))
-test(1736.06, fwrite(DT, sep='|', sep2=c("{",",","}"), logicalAsInt=TRUE), error="logicalAsInt has been renamed logical01")
+# 1736.06 was of defunct logicalAsInt argument
 DT = data.table(A=c("foo","ba|r","baz"))
 test(1736.07, capture.output(fwrite(DT,na="")), c("A","foo","ba|r","baz"))    # no list column so no need to quote
 test(1736.08, capture.output(fwrite(DT)), c("A","foo","ba|r","baz"))
diff --git a/man/fwrite.Rd b/man/fwrite.Rd
index efe6582200..95262c3896 100644
--- a/man/fwrite.Rd
+++ b/man/fwrite.Rd
@@ -12,7 +12,6 @@ fwrite(x, file = "", append = FALSE, quote = "auto",
   na = "", dec = ".", row.names = FALSE, col.names = TRUE,
   qmethod = c("double","escape"),
   logical01 = getOption("datatable.logical01", FALSE),  # due to change to TRUE; see NEWS
-  logicalAsInt = NULL,  # deprecated
   scipen = getOption('scipen', 0L),
   dateTimeAs = c("ISO","squash","epoch","write.csv"),
   buffMB = 8L, nThread = getDTthreads(verbose),
@@ -42,7 +41,6 @@ fwrite(x, file = "", append = FALSE, quote = "auto",
 	\item "double" (default, same as \code{write.csv}), in which case the double quote is doubled with another one.
       }}
   \item{logical01}{Should \code{logical} values be written as \code{1} and \code{0} rather than \code{"TRUE"} and \code{"FALSE"}?}
-  \item{logicalAsInt}{Deprecated. Old name for `logical01`. Name change for consistency with `fread` for which `logicalAsInt` would not make sense.}
   \item{scipen}{ \code{integer} In terms of printing width, how much of a bias should there be towards printing whole numbers rather than scientific notation? See Details. }
   \item{dateTimeAs}{ How \code{Date}/\code{IDate}, \code{ITime} and \code{POSIXct} items are written.
       \itemize{