diff --git a/extension/title-privacy.js b/extension/title-privacy.js
index 8528524..29addda 100644
--- a/extension/title-privacy.js
+++ b/extension/title-privacy.js
@@ -19,7 +19,7 @@ export function normalizeSendTabTitle(sendTabTitle, legacyMode = TITLE_PRIVACY_M
 
 export function normalizeTabTitle(title) {
     if (typeof title !== 'string') return null;
-    const normalized = title.replace(/^\s*(?:\(\d{1,2}\)|\[\d{1,2}\])\s+/, '').trim();
+    const normalized = title.replace(/^\s*(?:\(\d{1,2}\+?\)|\[\d{1,2}\+?\])\s+/, '').trim();
     return normalized.length > 0 ? normalized : null;
 }
 
diff --git a/scripts/test-title-privacy.mjs b/scripts/test-title-privacy.mjs
index cba3f66..6993d3a 100644
--- a/scripts/test-title-privacy.mjs
+++ b/scripts/test-title-privacy.mjs
@@ -18,6 +18,7 @@ assert.equal(normalizeSendTabTitle(true, TITLE_PRIVACY_MODES.HIDDEN), true);
 assert.equal(normalizeSendTabTitle(false, TITLE_PRIVACY_MODES.FULL), false);
 assert.equal(normalizeTabTitle('(12) Testvideo - YouTube'), 'Testvideo - YouTube');
 assert.equal(normalizeTabTitle('[7] Testvideo - YouTube'), 'Testvideo - YouTube');
+assert.equal(normalizeTabTitle('(99+) Testvideo - YouTube'), 'Testvideo - YouTube');
 assert.equal(normalizeTabTitle('(500) Days of Summer'), '(500) Days of Summer');
 assert.equal(normalizeTabTitle('   '), null);