diff --git a/R/write_h5ad_helpers.R b/R/write_h5ad_helpers.R
index 99923058..3a3ed8fd 100644
--- a/R/write_h5ad_helpers.R
+++ b/R/write_h5ad_helpers.R
@@ -261,7 +261,6 @@ write_h5ad_string_array <- function(value, file, name, compression, version = "0
 #' @param version Encoding version of the element to write
 write_h5ad_categorical <- function(value, file, name, compression, version = "0.2.0") {
   rhdf5::h5createGroup(file, name)
-  # TODO: change this to just writing?
   hdf5_write_compressed(file, paste0(name, "/categories"), as.integer(levels(value)), compression)
   hdf5_write_compressed(file, paste0(name, "/codes"), as.integer(value), compression)
   hdf5_write_compressed(file, paste0(name, "/ordered"), is.ordered(value), compression)