--- old/test/gc/whitebox/TestWBGC.java	2015-11-19 15:35:37.554128207 +0100
+++ new/test/gc/whitebox/TestWBGC.java	2015-11-19 15:35:37.438128211 +0100
@@ -44,7 +44,7 @@
                 "-XX:+UnlockDiagnosticVMOptions",
                 "-XX:+WhiteBoxAPI",
                 "-XX:MaxTenuringThreshold=1",
-                "-XX:+PrintGC",
+                "-Xlog:gc",
                 GCYoungTest.class.getName());
 
         OutputAnalyzer output = new OutputAnalyzer(pb.start());