diff --git a/gtests/net/packetdrill/config.c b/gtests/net/packetdrill/config.c
index a286b2656c4d9c916afabc90aada838f099f66a1..fe3947af15d541d77043bef59d3ce2b4a9e6ed13 100644
--- a/gtests/net/packetdrill/config.c
+++ b/gtests/net/packetdrill/config.c
@@ -103,9 +103,9 @@ void show_usage(void)
 		"\t[--local_ip=local_ip]\n"
 		"\t[--gateway_ip=gateway_ip]\n"
 		"\t[--netmask_ip=netmask_ip]\n"
-		"\t[--init_scripts=<comma separated filenames>\n"
-		"\t[--speed=<speed in Mbps>\n"
-		"\t[--mtu=<MTU in bytes>\n"
+		"\t[--init_scripts=<comma separated filenames>]\n"
+		"\t[--speed=<speed in Mbps>]\n"
+		"\t[--mtu=<MTU in bytes>]\n"
 		"\t[--tolerance_usecs=tolerance_usecs]\n"
 		"\t[--tcp_ts_tick_usecs=<microseconds per TCP TS val tick>]\n"
 		"\t[--non_fatal=<comma separated types: packet,syscall>]\n"