diff --git a/packages/svelte-lexical/src/core/plugins/HashtagPlugin.svelte b/packages/svelte-lexical/src/core/plugins/HashtagPlugin.svelte
index b6ae9a2..57fe8c5 100644
--- a/packages/svelte-lexical/src/core/plugins/HashtagPlugin.svelte
+++ b/packages/svelte-lexical/src/core/plugins/HashtagPlugin.svelte
@@ -222,7 +222,7 @@
 
     const hashtagAlpha = '[' + alpha + ']';
     const hashtagAlphanumeric = '[' + alphanumeric + ']';
-    const hashtagBoundary = '^|$|[^&/' + alphanumeric + ']';
+    const hashtagBoundary = '^|$|[^&/' + alphanumeric + hashChars + ']';
     const hashCharList = '[' + hashChars + ']';
 
     // A hashtag contains characters, numbers and underscores,