diff --git a/tools/regression/filemon/timed-forkb.c b/tools/regression/filemon/timed-forkb.c
index f7d66730abfd..b7a0221a3f02 100644
--- a/tools/regression/filemon/timed-forkb.c
+++ b/tools/regression/filemon/timed-forkb.c
@@ -45,8 +45,7 @@
 #define	SLEEP	20	/* seconds */
 #endif
 
-extern int verbose;
-int verbose;
+static int verbose;
 
 static void
 usage(void)