diff --git a/R/sftime.R b/R/sftime.R
index ca8452f..17d932f 100644
--- a/R/sftime.R
+++ b/R/sftime.R
@@ -575,12 +575,12 @@ st_as_sftime.stars <- function(x, ..., long = TRUE, time_column_name = NULL) {
 }
 
 #' @name st_as_sftime
-#' @param agr A character vector; see the details section of \code{\link{st_sf}}.
+#' @param agr A character vector; see the details section of \code{\link[sf]{st_sf}}.
 #' @param coords In case of point data: names or numbers of the numeric columns 
 #' holding coordinates.
 #' @param wkt The name or number of the character column that holds WKT encoded 
 #' geometries.
-#' @param dim Passed on to \code{\link{st_point}} (only when argument 
+#' @param dim Passed on to \code{\link[sf]{st_point}} (only when argument 
 #' \code{coords} is given).
 #' @param remove A logical value; when \code{coords} or \code{wkt} is given, 
 #' remove these columns from \code{x}?
@@ -817,7 +817,7 @@ st_as_sftime.cubble_df <- function(x, ..., sfc = NULL, crs, silent = FALSE) {
 #' @param _data An object of class \code{\link[=st_sftime]{sftime}}.
 #' @inheritParams sf::transform.sf
 #' 
-#' @return \code{_data} (an \code{sftime object}) with modified attribute values 
+#' @return \code{_data} (an \code{sftime} object) with modified attribute values 
 #' (columns). 
 #' 
 #' @examples
diff --git a/man/st_as_sftime.Rd b/man/st_as_sftime.Rd
index 8f8ce6f..63e5508 100644
--- a/man/st_as_sftime.Rd
+++ b/man/st_as_sftime.Rd
@@ -74,7 +74,7 @@ first one is taken.}
 Typically, \code{long} should be set to \code{TRUE} since time information
 typically is a dimension of a \code{stars} object.}
 
-\item{agr}{A character vector; see the details section of \code{\link{st_sf}}.}
+\item{agr}{A character vector; see the details section of \code{\link[sf]{st_sf}}.}
 
 \item{coords}{In case of point data: names or numbers of the numeric columns 
 holding coordinates.}
@@ -82,7 +82,7 @@ holding coordinates.}
 \item{wkt}{The name or number of the character column that holds WKT encoded 
 geometries.}
 
-\item{dim}{Passed on to \code{\link{st_point}} (only when argument 
+\item{dim}{Passed on to \code{\link[sf]{st_point}} (only when argument 
 \code{coords} is given).}
 
 \item{remove}{A logical value; when \code{coords} or \code{wkt} is given, 
diff --git a/man/transform.sftime.Rd b/man/transform.sftime.Rd
index 809e7ec..185e04a 100644
--- a/man/transform.sftime.Rd
+++ b/man/transform.sftime.Rd
@@ -12,7 +12,7 @@
 \item{...}{Further arguments of the form new_variable=expression}
 }
 \value{
-\code{_data} (an \code{sftime object}) with modified attribute values 
+\code{_data} (an \code{sftime} object) with modified attribute values 
 (columns).
 }
 \description{