diff --git a/exec/typehtml.js b/exec/typehtml.js
index 98a9f3e2f96a54f8b60016dbeaf6fac10f74673f..615107ceb09c14cd3fd23a9870f172efdebfe111 100644
--- a/exec/typehtml.js
+++ b/exec/typehtml.js
@@ -37,7 +37,7 @@ for(i in argv) {
 }
 
 if(this.f==undefined) {
-	print("usage: typehtml [-mono] <filename>");
+	print("usage: typehtml [-mono | -color] <filename>");
 	exit(1);
 }