diff --git a/jason-interpreter/src/main/java/jason/asSemantics/Agent.java b/jason-interpreter/src/main/java/jason/asSemantics/Agent.java
index 5be6e2e2..128601ef 100644
--- a/jason-interpreter/src/main/java/jason/asSemantics/Agent.java
+++ b/jason-interpreter/src/main/java/jason/asSemantics/Agent.java
@@ -350,9 +350,9 @@ public static synchronized ScheduledExecutorService getScheduler() {
             try {
                 n = Integer.parseInt( Config.get().get(Config.NB_TH_SCH).toString() );
             } catch (Exception e) {
-                n = 2;
+                n = 3;
             }
-            scheduler = Executors.newScheduledThreadPool(n);
+            scheduler = Executors.newScheduledThreadPool(n, Thread.ofVirtual().factory());
         }
         return scheduler;
     }
diff --git a/jason-interpreter/src/main/java/jason/asSemantics/ConcurrentInternalAction.java b/jason-interpreter/src/main/java/jason/asSemantics/ConcurrentInternalAction.java
index f0880f50..f57113ae 100644
--- a/jason-interpreter/src/main/java/jason/asSemantics/ConcurrentInternalAction.java
+++ b/jason-interpreter/src/main/java/jason/asSemantics/ConcurrentInternalAction.java
@@ -57,7 +57,7 @@ public void timeout(TransitionSystem ts, String intentionKey) { // called back w
 */
 public abstract class ConcurrentInternalAction implements InternalAction {
 
-    private static AtomicInteger actcount  = new AtomicInteger(0);
+    private static final AtomicInteger actCount = new AtomicInteger(0);
 
     public boolean canBeUsedInContext() {
         return false;
@@ -88,7 +88,7 @@ public Object execute(TransitionSystem ts, Unifier un, Term[] args) throws Excep
      * @return the final key used to store the intention in PI, this key is used the resume the intention
      */
     public String suspendInt(final TransitionSystem ts, String basekey, int timeout) {
-        final String key = basekey + "/" + (actcount.incrementAndGet());
+        final String key = basekey + "/" + (actCount.incrementAndGet());
         final Circumstance C = ts.getC();
         Intention i = C.getSelectedIntention();
         i.setSuspended(true);
diff --git a/jason-interpreter/src/main/java/jason/asSemantics/DefaultInternalAction.java b/jason-interpreter/src/main/java/jason/asSemantics/DefaultInternalAction.java
index 11ea198a..42c370c1 100644
--- a/jason-interpreter/src/main/java/jason/asSemantics/DefaultInternalAction.java
+++ b/jason-interpreter/src/main/java/jason/asSemantics/DefaultInternalAction.java
@@ -4,6 +4,7 @@
 import jason.asSyntax.Literal;
 import jason.asSyntax.Term;
 
+import java.io.Serial;
 import java.io.Serializable;
 
 /**
@@ -16,6 +17,7 @@
  */
 public class DefaultInternalAction implements InternalAction, Serializable {
 
+    @Serial
     private static final long serialVersionUID = 1L;
 
     public boolean suspendIntention()   {