diff --git a/app/src/main/kotlin/org/libremail/mail/ImapConnectionCache.kt b/app/src/main/kotlin/org/libremail/mail/ImapConnectionCache.kt
index 3b2446a..3dddea0 100644
--- a/app/src/main/kotlin/org/libremail/mail/ImapConnectionCache.kt
+++ b/app/src/main/kotlin/org/libremail/mail/ImapConnectionCache.kt
@@ -211,10 +211,12 @@ internal class ImapConnectionCache(
         // FolderClosedException/StoreClosedException are themselves MessagingException subtypes, so these
         // definite-drop checks must run before the MessagingException guard below — otherwise they'd fall
         // into it and get gated on a `.cause` they don't carry, instead of the unconditional `true` below.
-        if (error is FolderClosedException || error is StoreClosedException) return true
-        if (error is IOException || error is ConnectionException) return true
-        if (error !is MessagingException) return false
-        return error.cause is IOException || error.cause is ConnectionException
+        when {
+            error is FolderClosedException || error is StoreClosedException -> return true
+            error is IOException || error is ConnectionException -> return true
+            error !is MessagingException -> return false
+            else -> return error.cause is IOException || error.cause is ConnectionException
+        }
     }
 
     private companion object {