diff --git a/readconf.c b/readconf.c
index 9f559269..777739d6 100644
--- a/readconf.c
+++ b/readconf.c
@@ -3410,6 +3410,8 @@ fmt_intarg(OpCodes code, int val)
 	switch (code) {
 	case oAddressFamily:
 		return fmt_multistate_int(val, multistate_addressfamily);
+	case oCompression:
+		return fmt_multistate_int(val, multistate_compression);
 	case oVerifyHostKeyDNS:
 	case oUpdateHostkeys:
 		return fmt_multistate_int(val, multistate_yesnoask);