diff --git a/sys/netinet/libalias/alias_proxy.c b/sys/netinet/libalias/alias_proxy.c
index e2b0f100961..9b75b22a74b 100644
--- a/sys/netinet/libalias/alias_proxy.c
+++ b/sys/netinet/libalias/alias_proxy.c
@@ -341,7 +341,7 @@ ProxyEncodeTcpStream(struct alias_link *lnk,
 		memcpy(p, buffer, slen);
 	}
 
-	/* Save information about modfied sequence number */
+	/* Save information about modified sequence number */
 	{
 		int delta;