diff --git a/gtests/net/packetdrill/packet_checksum.c b/gtests/net/packetdrill/packet_checksum.c
index 9bb72a9b9dec28999fd4a9c87c683af7431a8df4..88fc014c39a38ab71bf85980bf484684d47cb141 100644
--- a/gtests/net/packetdrill/packet_checksum.c
+++ b/gtests/net/packetdrill/packet_checksum.c
@@ -215,9 +215,9 @@ void checksum_packet(struct packet *packet)
 {
 	int address_family = packet_address_family(packet);
 	if (address_family == AF_INET)
-		return checksum_ipv4_packet(packet);
+		checksum_ipv4_packet(packet);
 	else if (address_family == AF_INET6)
-		return checksum_ipv6_packet(packet);
+		checksum_ipv6_packet(packet);
 	else
 		assert(!"bad ip version");
 }