--- old/jdk/make/launcher/Launcher-jdk.javadoc.gmk	2016-08-07 17:45:09.000000000 -0700
+++ new/jdk/make/launcher/Launcher-jdk.javadoc.gmk	2016-08-07 17:45:08.000000000 -0700
@@ -27,7 +27,7 @@
 
 $(eval $(call SetupBuildLauncher, javadoc, \
     MAIN_CLASS := jdk.javadoc.internal.tool.Main, \
-    JAVA_ARGS := -addmods ALL-DEFAULT, \
+    JAVA_ARGS := --add-modules ALL-DEFAULT, \
     CFLAGS := -DEXPAND_CLASSPATH_WILDCARDS \
         -DNEVER_ACT_AS_SERVER_CLASS_MACHINE, \
 ))