diff --git a/LEGO1/legostream.h b/LEGO1/legostream.h
index 6555f6b6..220d1b6d 100644
--- a/LEGO1/legostream.h
+++ b/LEGO1/legostream.h
@@ -34,8 +34,8 @@ class LegoStream
     BinaryBit = 4,
   };
 
-  static MxResult WriteVariable(LegoStream* p_stream, MxVariableTable* p_from, const char* p_variableName);
-  static MxS32 ReadVariable(LegoStream* p_stream, MxVariableTable* p_to);
+  static MxResult __stdcall WriteVariable(LegoStream* p_stream, MxVariableTable* p_from, const char* p_variableName);
+  static MxS32 __stdcall ReadVariable(LegoStream* p_stream, MxVariableTable* p_to);
 
 protected:
   MxU8 m_mode;