diff --git a/include/unistd.h b/include/unistd.h
index d97f9dc017f8..4ae691701e60 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -74,7 +74,7 @@ typedef	__useconds_t	useconds_t;
 #define	_USECONDS_T_DECLARED
 #endif
 
-#define	 STDIN_FILENO	0	/* standard input file descriptor */
+#define	STDIN_FILENO	0	/* standard input file descriptor */
 #define	STDOUT_FILENO	1	/* standard output file descriptor */
 #define	STDERR_FILENO	2	/* standard error file descriptor */