diff --git a/include/stdtypes.h b/include/stdtypes.h
index d07fad043..561f1b21e 100755
--- a/include/stdtypes.h
+++ b/include/stdtypes.h
@@ -7,7 +7,7 @@
 #endif    
 #endif
 
-// @M
+/* @M */
 #define pure =0
 
 #define FALSE 0
@@ -17,9 +17,9 @@
 
 #define EOL             -1
 #define NOERR   0
-// @END
+/* @END */
 
-// @T
+/* @T */
 typedef unsigned char UINT8;
 #ifdef M_I386
 typedef unsigned short UINT16;
@@ -47,10 +47,10 @@ typedef UINT16 KEY;
 
 #undef _SVID
 
-// @END
+/* @END */
 
 
-// @FPUB
+/* @FPUB */
 int get_serial_number();
 long get_std_level();
 void init_global_vars();
@@ -61,9 +61,9 @@ extern void* operator new(unsigned);
 extern void operator delete(void*);
 #endif
 
-// @END
+/* @END */
 
-#endif // __STDTYPES_H
+#endif /* __STDTYPES_H */