diff --git a/applets/usage.c b/applets/usage.c
index 75c421a..ae6cec8 100644
--- a/applets/usage.c
+++ b/applets/usage.c
@@ -1365,6 +1365,10 @@
 #ifndef BB_FEATURE_TRIVIAL_HELP
 	"\nDiscard all but one of successive identical lines from INPUT\n"
 	"(or standard input), writing to OUTPUT (or standard output).\n"
+	"Options:\n"
+	"\t-c\tprefix lines by the number of occurrences\n"
+	"\t-d\tonly print duplicate lines\n"
+	"\t-u\tonly print unique lines\n"
 #endif
 	;
 #endif