diff --git a/src/racket/src/port.c b/src/racket/src/port.c
index ecef7e53c5..8ee1d7282f 100644
--- a/src/racket/src/port.c
+++ b/src/racket/src/port.c
@@ -278,12 +278,12 @@ typedef struct Scheme_FD {
 # endif
 } Scheme_FD;
 
-# define MZ_FLUSH_NEVER 0
-# define MZ_FLUSH_BY_LINE 1
-# define MZ_FLUSH_ALWAYS 2
-
 #endif
 
+#define MZ_FLUSH_NEVER 0
+#define MZ_FLUSH_BY_LINE 1
+#define MZ_FLUSH_ALWAYS 2
+
 #ifdef SOME_FDS_ARE_NOT_SELECTABLE
 # include <fcntl.h>
 #endif