diff --git a/libi2pd/TransportSession.h b/libi2pd/TransportSession.h
index b6be2433..2cff0b1f 100644
--- a/libi2pd/TransportSession.h
+++ b/libi2pd/TransportSession.h
@@ -36,7 +36,7 @@ namespace transport
 			SignedData (): m_Size(0) {}
 			SignedData (const SignedData& other)
 			{
-				m_Size = other.Size;
+				m_Size = other.m_Size;
 				memcpy (m_Buf, other.m_Buf, m_Size);
 			}