diff --git a/src/ca65html/ca65html b/src/ca65html/ca65html
index d5fc91915..c9768e747 100755
--- a/src/ca65html/ca65html
+++ b/src/ca65html/ca65html
@@ -1059,6 +1059,7 @@ sub Usage {
     print "  --indexpage        Create an index page\n";
     print "  --indextitle title Use title as the index title instead of $IndexTitle\n";
     print "  --keywordcolor c   Use color c for keywords instead of $KeywordColor\n";
+    print "  --linelabels       Generate a linexxx HTML label for each line\n";
     print "  --linenumbers      Add line numbers to the output\n";
     print "  --linkstyle style  Use the given link style\n";
     print "  --replaceext       Replace source extension instead of appending .html\n";