diff --git a/tools/release.cc b/tools/release.cc
index 425fb7c5..76fdd1e0 100644
--- a/tools/release.cc
+++ b/tools/release.cc
@@ -498,6 +498,7 @@ void ROMFile::analyzeContent()
 {
     auto revOffset1 = (descPtr->signatureOffset1 != 0) ? (descPtr->signatureOffset1 + 3) : 0;
     auto revOffset2 = (descPtr->signatureOffset2 != 0) ? (descPtr->signatureOffset2 + 3) : 0;
+    auto revOffset3 = (descPtr->dosDateOffset    != 0) ? descPtr->dosDateOffset          : 0;
     
     if (revOffset1 == 0)
     {
@@ -538,6 +539,11 @@ void ROMFile::analyzeContent()
             continue;
         }
 
+        if (revOffset3 != 0 && idx - revOffset3 < 0x10)
+        {
+            continue;
+        }
+
         if (srcFileContent[idx] != dstFileContent[idx])
         {
             sameContent = false;