diff --git a/examples/nbproject/project.properties b/examples/nbproject/project.properties
index 78c2fc8c6a537be84878b6149c35adf014db084f..a659c6016220db9cc02cbfe18f4b1c0ce29a9244 100644
--- a/examples/nbproject/project.properties
+++ b/examples/nbproject/project.properties
@@ -69,8 +69,8 @@ javac.modulepath=
 javac.processormodulepath=
 javac.processorpath=\
     ${javac.classpath}
-javac.source=22
-javac.target=22
+javac.source=21
+javac.target=21
 javac.test.classpath=\
     ${javac.classpath}:\
     ${build.classes.dir}