diff --git a/samples/treectrl/icon1.xpm b/samples/treectrl/icon1.xpm
index 0263fadbaa..5558872fd0 100644
--- a/samples/treectrl/icon1.xpm
+++ b/samples/treectrl/icon1.xpm
@@ -4,7 +4,7 @@ static char *icon1_xpm[] = {
 "    32    32        2            1",
 /* colors */
 ". c #000000",
-"# c #ffffff",
+"# c None",
 /* pixels */
 "################################",
 "################################",
@@ -19,7 +19,7 @@ static char *icon1_xpm[] = {
 "####..##..##..##########..######",
 "####..##..##..##########..######",
 "####..##################..######",
-"###...##################..######",
+"####..##################..######",
 "####..##..##..##..##..##..######",
 "####..##..##..##..##..##..######",
 "####..##################..######",
diff --git a/samples/treectrl/icon4.xpm b/samples/treectrl/icon4.xpm
index f4cd561639..06b74261a5 100644
--- a/samples/treectrl/icon4.xpm
+++ b/samples/treectrl/icon4.xpm
@@ -7,7 +7,7 @@ static char *icon4_xpm[] = {
 "# c #c0c0c0",
 "a c #808080",
 "b c #ff0000",
-"c c #ffffff",
+"c c None",
 /* pixels */
 "cccccccccccccccccccccccccccccccc",
 "cccccccccccccccccccccccccccccccc",