diff --git a/packages/backend/src/mfm/from-html.ts b/packages/backend/src/mfm/from-html.ts
index e745777bf..b00c86741 100644
--- a/packages/backend/src/mfm/from-html.ts
+++ b/packages/backend/src/mfm/from-html.ts
@@ -68,14 +68,16 @@ export function fromHtml(html: string, quoteUri?: string | null): string {
 
 			case 'a':
 			{
-				const txt = getText(node);
+				// trim spaces away, because some AP servers (app.wafrn.net) send strange
+				// zero width non-break space in strange places and things like that
+				const txt = getText(node).trim();
 				const href = getAttr(node, 'href');
 
 				// hashtags
 				if (txt.startsWith('#') && href && (attrHas(node, 'rel', 'tag') || attrHas(node, 'class', 'hashtag'))) {
 					text += txt;
-				// mentions
-				} else if (txt.startsWith('@') && !attrHas(node, 'rel', 'me')) {
+				// mentions: a link that starts with `@` and does not include space
+				} else if (txt.startsWith('@') && txt.match(/\s/) == null && !attrHas(node, 'rel', 'me')) {
 					const part = txt.split('@');
 
 					if (part.length === 2 && href) {