diff --git a/esvsearch.d b/esvsearch.d
index 17b1c24..9649b16 100644
--- a/esvsearch.d
+++ b/esvsearch.d
@@ -71,7 +71,7 @@ main(string[] args)
 	}
 
 	if (args.length < 2) {
-		stderr.writefln("usage: %s [-l length] query",
+		stderr.writefln("usage: %s [-e] [-l length] query",
 			baseName(args[0]));
 		return 1;
 	}