diff --git a/components/style/counter_style/mod.rs b/components/style/counter_style/mod.rs
index 1688189d3e0..e470e53ae1f 100644
--- a/components/style/counter_style/mod.rs
+++ b/components/style/counter_style/mod.rs
@@ -55,7 +55,12 @@ pub fn parse_counter_style_name<'i, 't>(
 }
 
 fn is_valid_name_definition(ident: &CustomIdent) -> bool {
-    ident.0 != atom!("decimal") && ident.0 != atom!("disc")
+    ident.0 != atom!("decimal")
+        && ident.0 != atom!("disc")
+        && ident.0 != atom!("circle")
+        && ident.0 != atom!("square")
+        && ident.0 != atom!("disclosure-closed")
+        && ident.0 != atom!("disclosure-open")
 }
 
 /// Parse the prelude of an @counter-style rule