diff --git a/src/client/main.c b/src/client/main.c
index a2da8b3c..c88cdf5b 100644
--- a/src/client/main.c
+++ b/src/client/main.c
@@ -32,10 +32,6 @@
  *     Steve McClure, 1998
  */
 
-#ifdef _NTSDK
-#undef _NTSDK
-#endif
-
 #include "misc.h"
 #include "proto.h"
 #include "queue.h"