diff --git a/configure.ac b/configure.ac
index e866d7823..7dc42c1ca 100644
--- a/configure.ac
+++ b/configure.ac
@@ -530,7 +530,7 @@ if test "x$enable_cgroups" = xyes; then
 	fi
 fi
 
-# Enable protocol-neutral image support.
+# Enable image support.
 AC_ARG_WITH(
 	image-support,
 	AS_HELP_STRING(--with-image-support, enable Kitty/SIXEL/ASCII images)
diff --git a/image-sixel.c b/image-sixel.c
index 362acc444..15d5c07c6 100644
--- a/image-sixel.c
+++ b/image-sixel.c
@@ -509,7 +509,7 @@ sixel_colour_to_rgb(u_int colour, u_char *r, u_char *g, u_char *b)
 	*b = sixel_hue(p, q, h + 1.0 / 3) * 255 + 0.5;
 }
 
-/* Convert decoded SIXEL data into the protocol-neutral immutable image. */
+/* Convert decoded SIXEL data into the immutable image. */
 struct image *
 sixel_to_image(struct sixel_image *si)
 {
diff --git a/image.c b/image.c
index e9ca93dad..180582b9a 100644
--- a/image.c
+++ b/image.c
@@ -27,7 +27,7 @@
 
 #include "tmux.h"
 
-/* A protocol-neutral average of part of an image cell. RGB is premultiplied. */
+/* An average of part of an image cell. RGB is premultiplied. */
 struct image_sample {
 	u_char			 red;
 	u_char			 green;
@@ -45,7 +45,7 @@ struct image_cell {
 	struct image_sample	 samples[IMAGE_SAMPLE_ROWS][IMAGE_SAMPLE_COLUMNS];
 };
 
-/* Immutable protocol-neutral image placement. */
+/* Immutable image data and cell geometry. */
 struct image {
 	u_int			 id;
 	u_int			 references;