diff --git a/usr.bin/ktrdump/ktrdump.c b/usr.bin/ktrdump/ktrdump.c
index 69a1bf18784f..c700526dc138 100644
--- a/usr.bin/ktrdump/ktrdump.c
+++ b/usr.bin/ktrdump/ktrdump.c
@@ -48,9 +48,6 @@ __FBSDID("$FreeBSD$");
 #define	USAGE \
 	"usage: ktrdump [-cfqrt] [-e execfile] [-i ktrfile] [-m corefile] [-o outfile]\n"
 
-extern char *optarg;
-extern int optind;
-
 static void usage(void);
 
 static struct nlist nl[] = {