diff --git a/README.md b/README.md
index 551a90c..8d826ea 100755
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Pixelflut defines four main commands that are always supported to get you starte
 * `HELP`: Returns a short introductional help text.
 * `SIZE`: Returns the size of the canvas in pixel.
 * `PX <x> <y>` Return the current color of a pixel at position (x, y).
-* `PX <x> <y> <rrrggbb(aa)>`: Draw a single pixel at position (x, y) with the specified hex color code.
+* `PX <x> <y> <rrggbb(aa)>`: Draw a single pixel at position (x, y) with the specified hex color code.
   If the color code contains an alpha channel value, it is blended with the current color of the pixel.
 
 You can send multiple commands over the same TCP socket by terminating each command with a single newline character (`\n`).