diff --git a/src/main.ts b/src/main.ts
index 703c9b5e..15e2cff8 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1083,7 +1083,10 @@ export default class BCPlugin extends Plugin {
       ...(tags?.map((t) => t.tag.slice(1)) ?? []),
       ...[...(frontmatter?.tags ?? [])].flat(),
       ...[...(frontmatter?.tag ?? [])].flat(),
-    ].map((t: string) => (withHash ? "#" : "") + t.toLowerCase());
+    ].map(
+      (t: string) =>
+        (!t.startsWith("#") && withHash ? "#" : "") + t.toLowerCase()
+    );
   };
 
   addTagNotesToGraph(