diff --git a/Makefile b/Makefile
index ae7d981..351a647 100644
--- a/Makefile
+++ b/Makefile
@@ -124,8 +124,8 @@ $(eval $(call svg2png,Scratch\ Link\ Safari\ Helper/Scratch\ Link\ Safari\ Exten
 # See also:
 #   https://stackoverflow.com/q/3236115
 #   https://iconhandbook.co.uk/reference/chart/windows/
-$(eval $(call svg2ico,scratch-link-win/scratch-link.ico,Assets/square.svg,16 24 32 48 64 96 128 256 512))
-$(eval $(call svg2ico,scratch-link-win/scratch-link-tray.ico,Assets/simplified.svg,16 24 32 48 64 96 128 256 512))
+$(eval $(call svg2ico,scratch-link-win/scratch-link.ico,Assets/square.svg,256 128 96 64 48 32 24 16))
+$(eval $(call svg2ico,scratch-link-win/scratch-link-tray.ico,Assets/simplified.svg,256 128 96 64 48 32 24 16))
 
 # Windows MSIX
 # TODO: does Microsoft really want DPI=72 for all of these?
diff --git a/scratch-link-win/scratch-link-tray.ico b/scratch-link-win/scratch-link-tray.ico
index 6ff26eb..73ae1dc 100644
Binary files a/scratch-link-win/scratch-link-tray.ico and b/scratch-link-win/scratch-link-tray.ico differ
diff --git a/scratch-link-win/scratch-link.ico b/scratch-link-win/scratch-link.ico
index eae6967..42da3ac 100644
Binary files a/scratch-link-win/scratch-link.ico and b/scratch-link-win/scratch-link.ico differ
diff --git a/svg-convert.sh b/svg-convert.sh
index e043121..026cd64 100644
--- a/svg-convert.sh
+++ b/svg-convert.sh
@@ -10,6 +10,8 @@ usage () {
 	echo "  The resulting PNG is optimized using optipng"
 	echo "ICO conversion:"
 	echo "  Assumes each desired size is square"
+	echo "  Sizes above 256 may not be supported"
+	echo "  List sizes in decreasing order to make sure the largest suitable icon size is used in every context"
 	echo "  Repeats PNG conversion once per desired size, then glues the results together into an ICO file"
 	echo "  PNG optimizations are performed in parallel so progress reporting will likely be garbled"
 }
@@ -45,7 +47,7 @@ svg2ico () {
 	OUTPUT_ICO="$1"
 	shift
 	SVG2ICO_TMP=$(mktemp -d -t svg2ico-XXXXXXXXXX)
-	trap 'echo "Cleaning up..." >&2; rm -rv "${SVG2ICO_TMP}"; exit' ERR EXIT HUP INT TERM
+	trap 'echo "Cleaning up..." >&2; rm -rv "${SVG2ICO_TMP}"; exit' EXIT HUP INT TERM
 	ICO_PNGS=()
 	for SIZE in "$@"; do
 		ICO_PNG="${SVG2ICO_TMP}/icon-${SIZE}.png"