diff --git a/source/WSSCompact.cpp b/source/WSSCompact.cpp
index 195a450ec..162a7d8e5 100644
--- a/source/WSSCompact.cpp
+++ b/source/WSSCompact.cpp
@@ -511,6 +511,7 @@ void cWSSCompact::cPAKFile::UpdateChunk1To2()
 
 
 		NewDataContents.append( CompressedData );
+		m_NumDirty++;
 	}
 
 	// Done converting