--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/resources/javac.properties	Mon Feb 06 09:25:31 2017 -0800
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/resources/javac.properties	Mon Feb 06 12:35:13 2017 -0800
@@ -204,6 +204,9 @@
 javac.opt.Xlint.desc.module=\
     Warn about module system related issues.
 
+javac.opt.Xlint.desc.opens=\
+    Warn about issues regarding module opens.
+
 javac.opt.Xlint.desc.options=\
     Warn about issues relating to use of command line options.