diff --git a/build.xml b/build.xml
index 56e75ad4..1456e5c5 100644
--- a/build.xml
+++ b/build.xml
@@ -214,7 +214,9 @@
 			encoding="utf-8"
 			debug="yes"
 			includeAntRuntime="no"
-			source="9">
+			source="${jvm.version}"
+			verbose="true"
+			>
 			<!-- release="${jvm.version}" -->
 			<!-- excludesfile="${dir.lib}/src.excludes" -->
 			<!-- modulepath="modules" -->