From 8b6b4be8e3627e75fc1314c2329200a449ce81a1 Mon Sep 17 00:00:00 2001
From: Morgan Pretty <morgan.t.pretty@gmail.com>
Date: Mon, 21 Mar 2022 12:01:23 +1100
Subject: [PATCH] Added back a missing type check

---
 .../Sending & Receiving/Attachments/TSAttachmentPointer.m   | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/SessionMessagingKit/Sending & Receiving/Attachments/TSAttachmentPointer.m b/SessionMessagingKit/Sending & Receiving/Attachments/TSAttachmentPointer.m
index e27bccab2..6a675fa64 100644
--- a/SessionMessagingKit/Sending & Receiving/Attachments/TSAttachmentPointer.m	
+++ b/SessionMessagingKit/Sending & Receiving/Attachments/TSAttachmentPointer.m	
@@ -169,8 +169,10 @@ NS_ASSUME_NONNULL_BEGIN
     // Legacy instances of TSAttachmentPointer apparently used the serverId as their
     // uniqueId.
     if (attachmentSchemaVersion < 2 && self.serverId == 0) {
-        // For legacy instances, try to parse the serverId from the uniqueId.
-        self.serverId = (UInt64)[self.uniqueId integerValue];
+        if ([self isDecimalNumberText:self.uniqueId]) {
+            // For legacy instances, try to parse the serverId from the uniqueId.
+            self.serverId = (UInt64)[self.uniqueId integerValue];
+        }
     }
 }