diff --git a/lib/roken/getopt.c b/lib/roken/getopt.c
index 612d17db4..ceb5439e5 100644
--- a/lib/roken/getopt.c
+++ b/lib/roken/getopt.c
@@ -44,11 +44,11 @@ static char sccsid[] = "@(#)getopt.c	8.1 (Berkeley) 6/4/93";
 /*
  * get option letter from argument vector
  */
-int	opterr = 1,		/* if error message should be printed */
-	optind = 1,		/* index into parent argv vector */
-	optopt,			/* character checked for validity */
-	optreset;		/* reset getopt */
-char	*optarg;		/* argument associated with option */
+ROKEN_LIB_VARIABLE int opterr = 1; /* if error message should be printed */
+ROKEN_LIB_VARIABLE int optind = 1; /* index into parent argv vector */
+ROKEN_LIB_VARIABLE int optopt;   /* character checked for validity */
+int	optreset;                /* reset getopt */
+ROKEN_LIB_VARIABLE char	*optarg; /* argument associated with option */
 
 #define	BADCH	(int)'?'
 #define	BADARG	(int)':'