--- a/test/langtools/tools/javac/diags/examples/SwitchExpressions.java	Thu Dec 13 17:01:15 2018 +0100
+++ b/test/langtools/tools/javac/diags/examples/SwitchExpressions.java	Thu Dec 13 19:06:11 2018 +0100
@@ -23,7 +23,7 @@
 
 // key: compiler.misc.feature.switch.expressions
 // key: compiler.warn.preview.feature.use.plural
-// options: --enable-preview -source 12 -Xlint:preview
+// options: --enable-preview -source 13 -Xlint:preview
 
 class SwitchExpressions {
     int m(int i) {