diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
index 764075e9..3a6cd0ef 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
@@ -169,6 +169,8 @@ class ThreadActivity : SimpleActivity() {
         }
         isActivityVisible = true
 
+        notificationManager.cancel(threadId.hashCode())
+
         ensureBackgroundThread {
             val newConv = conversationsDB.getConversationWithThreadId(threadId)
             if (newConv != null) {