diff --git a/ruby+js/fromjava/nbactions.xml b/ruby+js/fromjava/nbactions.xml
index 75de518..f7d474d 100644
--- a/ruby+js/fromjava/nbactions.xml
+++ b/ruby+js/fromjava/nbactions.xml
@@ -10,7 +10,7 @@
                 <goal>exec:exec</goal>
             </goals>
             <properties>
-                <debug>-J:-Xrunjdwp:transport=dt_socket,server=n,address=${jpda.address}</debug>
+                <debug>-Xrunjdwp:transport=dt_socket,server=n,address=${jpda.address}</debug>
                 <jpda.listen>true</jpda.listen>
             </properties>
         </action>
diff --git a/ruby+js/fromjava/pom.xml b/ruby+js/fromjava/pom.xml
index 3f074d1..a8a7219 100644
--- a/ruby+js/fromjava/pom.xml
+++ b/ruby+js/fromjava/pom.xml
@@ -26,9 +26,10 @@
                 <artifactId>exec-maven-plugin</artifactId>
                 <version>1.4.0</version>
                 <configuration>
-                    <executable>${java.home}/bin/graalvm</executable>
+                    <executable>${java.home}/bin/java</executable>
                     <arguments>
                         <arguments>${debug}</arguments>
+                        <argument>-polyglot</argument>
                         <argument>-cp</argument>
                         <classpath/>
                         <argument>org.apidesign.demo.rubyjs.fromjava.Main</argument>