diff --git a/ghc/runtime/main/main.lc b/ghc/runtime/main/main.lc
index 34744a59fad642f952ae198fc123310d2fffec6d..86f82ce9e302ff01e2f1eb5cd0731b1bde282a95 100644
--- a/ghc/runtime/main/main.lc
+++ b/ghc/runtime/main/main.lc
@@ -14,10 +14,6 @@
 #include "rtsdefs.h"
 #include <setjmp.h>
 
-#if 1
-#include <windows.h>
-#endif
-
 #if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
 # include <string.h>
 /* An ANSI string.h and pre-ANSI memory.h might conflict.  */