diff --git a/harbour/include/hbmath.h b/harbour/include/hbmath.h
index d489511fcc..a7b05587b9 100644
--- a/harbour/include/hbmath.h
+++ b/harbour/include/hbmath.h
@@ -88,7 +88,6 @@ extern "C" {
    #define exception _exception
 #elif defined(__DJGPP__)
    #define HB_MATH_HANDLER
-   _LIB_VERSION_TYPE _LIB_VERSION = _XOPEN_;
 #endif
 
 typedef struct _HB_MATH_EXCEPTION