diff --git a/doc/syntax.texi b/doc/syntax.texi
index f52e7638d2..169fa787f2 100644
--- a/doc/syntax.texi
+++ b/doc/syntax.texi
@@ -144,7 +144,7 @@ The undefined value can be expressed using the "0:0" string.
 @section Color
 
 It can be the name of a color (case insensitive match) or a
-[0x|#]RRGGBB[AA] sequence, possibly followed by "@" and a string
+[0x|#]RRGGBB[AA] sequence, possibly followed by "@@" and a string
 representing the alpha component.
 
 The alpha component may be a string composed by "0x" followed by an