diff --git a/harbour/source/rdd/hbsix/sxcrypt.c b/harbour/source/rdd/hbsix/sxcrypt.c
index 69de957c21..c7fd4ab056 100644
--- a/harbour/source/rdd/hbsix/sxcrypt.c
+++ b/harbour/source/rdd/hbsix/sxcrypt.c
@@ -55,6 +55,9 @@
  *
  */
 
+#ifdef HB_NO_DEFAULT_API_MACROS
+#include "hbapiitm.h"
+#endif
 #include "hbsxfunc.h"
 
 #define rnd_mul1  0x0de6d
diff --git a/harbour/source/rdd/hsx/hsx.c b/harbour/source/rdd/hsx/hsx.c
index 7053971fea..01ff5036c0 100644
--- a/harbour/source/rdd/hsx/hsx.c
+++ b/harbour/source/rdd/hsx/hsx.c
@@ -220,6 +220,9 @@
 */
 
 #include "hbapi.h"
+#ifdef HB_NO_DEFAULT_API_MACROS
+#include "hbapiitm.h"
+#endif
 #include "hbapifs.h"
 #include "hbapirdd.h"
 #include "hbapierr.h"