diff --git a/src/engine/eiface.h b/src/engine/eiface.h
index 596aa9b..6994273 100644
--- a/src/engine/eiface.h
+++ b/src/engine/eiface.h
@@ -420,11 +420,10 @@ typedef enum _fieldtypes
 	FIELD_TYPECOUNT,		// MUST BE LAST
 } FIELDTYPE;
 
-#ifndef linux
-#ifndef offsetof
+
+#if !defined(offsetof)  && !defined(GNUC)
 #define offsetof(s,m)	(size_t)&(((s *)0)->m)
 #endif
-#endif
 
 #define _FIELD(type,name,fieldtype,count,flags)		{ fieldtype, #name, offsetof(type, name), count, flags }
 #define DEFINE_FIELD(type,name,fieldtype)			_FIELD(type, name, fieldtype, 1, 0)