diff --git a/src/main/java/cz/cvut/fel/sit/omo/foodchain/node/base/NodeBase.java b/src/main/java/cz/cvut/fel/sit/omo/foodchain/node/base/NodeBase.java
index 08df05d..08f340c 100644
--- a/src/main/java/cz/cvut/fel/sit/omo/foodchain/node/base/NodeBase.java
+++ b/src/main/java/cz/cvut/fel/sit/omo/foodchain/node/base/NodeBase.java
@@ -164,7 +164,7 @@ public class NodeBase implements ChannelObserver {
      * @param action type of product operation to do
      * @param product product to proceed
      */
-    public void doAction(ProductOperationType action, Product product)
+    public void doAction(ProductOperationType action, Product product) throws IllegalCallerException
     {
         if(action.getNode().equals(this.nodeType))
             new Action(this, product, action);
diff --git a/src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/DoActionStep.java b/src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/DoActionStep.java
index 433376a..f934978 100644
--- a/src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/DoActionStep.java
+++ b/src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/DoActionStep.java
@@ -22,11 +22,17 @@ public class DoActionStep extends ScenarioStep {
 
     @Override
     void execute() {
-        if (product != null){
-            nodeBase.doAction(productOperationType, product);
+        //todo maybe do a better error handling
+        try {
+            if (product != null) {
+                nodeBase.doAction(productOperationType, product);
+            }
+            else {
+                nodeBase.doAction(productOperationType);
+            }
         }
-        else {
-            nodeBase.doAction(productOperationType);
+        catch (IllegalCallerException e) {
+            System.err.println(e.getMessage());
         }
     }
 }