diff --git a/cfg-mencoder.h b/cfg-mencoder.h
index a2f6ce2f0f..b6209e8237 100644
--- a/cfg-mencoder.h
+++ b/cfg-mencoder.h
@@ -207,6 +207,9 @@ m_option_t mencoder_opts[]={
 	{"autoexpand", &auto_expand, CONF_TYPE_FLAG, 0, 0, 1, NULL},
 	{"noautoexpand", &auto_expand, CONF_TYPE_FLAG, 0, 1, 0, NULL},
 	
+	{"encodedups", &encode_duplicates, CONF_TYPE_FLAG, 0, 0, 1, NULL},
+	{"noencodedups", &encode_duplicates, CONF_TYPE_FLAG, 0, 1, 0, NULL},
+	
 	// info header strings
 	{"info", info_conf, CONF_TYPE_SUBCONFIG, 0, 0, 0, NULL},