diff --git a/gtests/net/packetdrill/lexer.l b/gtests/net/packetdrill/lexer.l
index e00de6cb8047587d178ea083e50a1e837ee75f19..f31c6d0f86ef82262248c2a6a45e444fd29b03c4 100644
--- a/gtests/net/packetdrill/lexer.l
+++ b/gtests/net/packetdrill/lexer.l
@@ -270,7 +270,6 @@ sinfo_tsn			return SINFO_TSN;
 sinfo_cumtsn			return SINFO_CUMTSN;
 pr_policy			return PR_POLICY;
 pr_value			return PR_VALUE;
-auth_keynumber			return AUTH_KEYNUMBER;
 sendv_flags			return SENDV_FLAGS;
 sendv_sndinfo			return SENDV_SNDINFO;
 sendv_prinfo			return SENDV_PRINFO;