diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
index 1f3e5c6666..9a7fd8c7a3 100644
--- a/examples/l3fwd/main.c
+++ b/examples/l3fwd/main.c
@@ -2074,7 +2074,7 @@ parse_args(int argc, char **argv)
 			}
 
 			if (!strncmp(lgopts[option_index].name, CMD_LINE_OPT_ETH_DEST,
-				sizeof(CMD_LINE_OPT_CONFIG))) {
+				sizeof(CMD_LINE_OPT_ETH_DEST))) {
 					parse_eth_dest(optarg);
 			}