diff --git a/R/ansi-palette.R b/R/ansi-palette.R
index a8fb02a..91d7c4d 100644
--- a/R/ansi-palette.R
+++ b/R/ansi-palette.R
@@ -91,12 +91,12 @@ truecolor <- as.integer(256 ^ 3)
 ansi_palettes <- rbind(
   utils::read.table(
     "tools/ansi-palettes.txt",
-    comment = ";",
+    comment.char = ";",
     stringsAsFactors = FALSE
   ),
   utils::read.table(
     "tools/ansi-iterm-palettes.txt",
-    comment = ";",
+    comment.char = ";",
     stringsAsFactors = FALSE
   )
 )