diff --git a/lib/config.dos b/lib/config.dos
index 67d12d0b77..47d8130aab 100644
--- a/lib/config.dos
+++ b/lib/config.dos
@@ -81,13 +81,13 @@
  */
 #define SEND_TYPE_ARG1         int
 #define SEND_QUAL_ARG2         const
-#define SEND_TYPE_ARG2         char *
+#define SEND_TYPE_ARG2         void *
 #define SEND_TYPE_ARG3         int
 #define SEND_TYPE_ARG4         int
 #define SEND_TYPE_RETV         int
 
 #define RECV_TYPE_ARG1         int
-#define RECV_TYPE_ARG2         char *
+#define RECV_TYPE_ARG2         void *
 #define RECV_TYPE_ARG3         int
 #define RECV_TYPE_ARG4         int
 #define RECV_TYPE_RETV         int