diff --git a/graphics-protocol.asciidoc b/graphics-protocol.asciidoc
index 34e7f25a8..008d45398 100644
--- a/graphics-protocol.asciidoc
+++ b/graphics-protocol.asciidoc
@@ -65,7 +65,7 @@ of transmitting paletted images.
 
 === RGB and RGBA data
 
-In these formats the pixel data is stored directly ans 3 or 4 bytes per pixel, respectively.
+In these formats the pixel data is stored directly as 3 or 4 bytes per pixel, respectively.
 When specifying images in this format, the image dimensions **must** be sent in the control data.
 For example: