From 3f23df868ff6fbe948d84a9e7cb0004e0a1d53c0 Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Fri, 6 Mar 2026 13:49:15 -0500
Subject: [PATCH] Fix logic inversion issue

---
 SabreTools.Serialization/Readers/NESCart.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SabreTools.Serialization/Readers/NESCart.cs b/SabreTools.Serialization/Readers/NESCart.cs
index ccfcb2df..20546fdb 100644
--- a/SabreTools.Serialization/Readers/NESCart.cs
+++ b/SabreTools.Serialization/Readers/NESCart.cs
@@ -97,7 +97,7 @@ namespace SabreTools.Serialization.Readers
         {
             // Cache data until NES 2.0 flag determined
             byte[] identificationString = data.ReadBytes(4);
-            if (identificationString.EqualsExactly(SignatureBytes))
+            if (!identificationString.EqualsExactly(SignatureBytes))
                 return null;
 
             byte prgRomSize = data.ReadByteValue();