--- a/langtools/test/tools/javac/Diagnostics/8010387/T8010387.java	Wed Jul 05 22:10:57 2017 +0200
+++ b/langtools/test/tools/javac/Diagnostics/8010387/T8010387.java	Tue Sep 06 17:04:43 2016 -0700
@@ -2,7 +2,7 @@
  * @test /nodynamiccopyright/
  * @bug     8010387
  * @summary rich diagnostic sometimes contain wrong type variable numbering
- * @compile/fail/ref=T8010387.out -XDrawDiagnostics -diags:formatterOptions=disambiguateTvars,where T8010387.java
+ * @compile/fail/ref=T8010387.out -XDrawDiagnostics --diags:formatterOptions=disambiguateTvars,where T8010387.java
  */
 abstract class T8010387<X> {