diff --git a/src/tier0/binstream.cpp b/src/tier0/binstream.cpp
index 6ee26540..40bc6514 100644
--- a/src/tier0/binstream.cpp
+++ b/src/tier0/binstream.cpp
@@ -54,7 +54,7 @@ bool CIOStream::Open(const char* const filePath, const Mode_e mode)
 		m_stream.close();
 	}
 
-	m_stream.open(filePath, GetInternalStreamMode(mode));
+	m_stream.open(filePath, m_flags);
 
 	if (!m_stream.is_open() || !m_stream.good())
 	{