diff --git a/FontSet.md b/FontSet.md
index 5a8b91d..dab86ff 100644
--- a/FontSet.md
+++ b/FontSet.md
@@ -19,7 +19,7 @@ Here's a small example:
     
      <Style name="font-test">
       <Rule>
-       <TextSymbolizer name="NAME" fontset_name="my-fonts" size="15" fill="black" />
+       <TextSymbolizer name="NAME" fontset-name="my-fonts" size="15" fill="black" />
       </Rule>
      </Style>