--- a/lib/iec_std_lib.h	Thu Oct 04 14:30:51 2012 +0100
+++ b/lib/iec_std_lib.h	Thu Oct 04 15:10:45 2012 +0100
@@ -100,7 +100,7 @@
 #define __DATE_LITERAL(value) __literal(DATE,value)
 #define __TOD_LITERAL(value) __literal(TOD,value)
 #define __DT_LITERAL(value) __literal(DT,value)
-#define __STRING_LITERAL(count,value) {count,value}
+#define __STRING_LITERAL(count,value) (STRING){count,value}
 #define __BYTE_LITERAL(value) __literal(BYTE,value)
 #define __WORD_LITERAL(value) __literal(WORD,value)
 #define __DWORD_LITERAL(value) __literal(DWORD,value,__32b_sufix)