--- a/langtools/src/share/classes/com/sun/tools/javac/resources/javac.properties	Wed May 15 00:00:39 2013 -0700
+++ b/langtools/src/share/classes/com/sun/tools/javac/resources/javac.properties	Wed May 15 14:00:31 2013 +0100
@@ -168,6 +168,8 @@
     Specify which file to read when both a source file and class file are found for an implicitly compiled class
 javac.opt.AT=\
     Read options and filenames from file
+javac.opt.diags=\
+    Select a diagnostic mode
 
 ## errors