diff --git a/common/markdown_parser/parser.ts b/common/markdown_parser/parser.ts
index aaa98a8..a5058f5 100644
--- a/common/markdown_parser/parser.ts
+++ b/common/markdown_parser/parser.ts
@@ -142,7 +142,7 @@ export const Highlight: MarkdownConfig = {
   ],
 };
 
-export const attributeRegex = /^\[([^:]+)(::\s*)([^\]]+)\]/;
+export const attributeRegex = /^\[(\w+)(::\s*)([^\]]+)\]/;
 
 export const Attribute: MarkdownConfig = {
   defineNodes: [
@@ -164,7 +164,7 @@ export const Attribute: MarkdownConfig = {
         ) {
           return -1;
         }
-        const [fullMatch, attributeName, attributeColon, attributeValue] =
+        const [fullMatch, attributeName, attributeColon, _attributeValue] =
           match;
         const endPos = pos + fullMatch.length;