- is not allowed in vnames!

diff --git a/doc/rrdgraph_data.pod b/doc/rrdgraph_data.pod
index 4508cb0a490faf0cd0d46d28e878f5c4be5e39d8..3424bc237a1bba43963ffccdd29be2d8cc64881b 100644 (file)
--- a/doc/rrdgraph_data.pod
+++ b/doc/rrdgraph_data.pod
@@ -20,7 +20,7 @@ instructions use a language called B<RPN> which is described in its
 own manual page.
 
 Variable names (I<vname>) must be made up strings of the following characters
-C<A-Z, a-z, 0-9, -,_> and a maximum length of 255 characters.
+C<A-Z, a-z, 0-9, _> and a maximum length of 255 characters.
 
 When picking variable names, make sure you do not choose a name that is
 already taken by an RPN operator. A safe bet it to use lowercase or