--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties	Thu May 11 15:12:38 2017 -0700
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties	Fri May 12 06:42:37 2017 +0200
@@ -3027,6 +3027,18 @@
 compiler.err.addmods.all.module.path.invalid=\
     --add-modules ALL-MODULE-PATH can only be used when compiling the unnamed module
 
+# 0: symbol
+compiler.err.add.exports.with.release=\
+    exporting a package from system module {0} is not allowed with --release
+
+# 0: symbol
+compiler.err.add.reads.with.release=\
+    adding read edges for system module {0} is not allowed with --release
+
+# 0: symbol
+compiler.err.patch.module.with.release=\
+    patching system module {0} is not allowed in combination with --release
+
 compiler.warn.addopens.ignored=\
     --add-opens has no effect at compile time