diff --git a/core/src/main/java/ship/test/AergoMock.java b/core/src/main/java/ship/test/AergoMock.java
index 9be5ebd..722138d 100644
--- a/core/src/main/java/ship/test/AergoMock.java
+++ b/core/src/main/java/ship/test/AergoMock.java
@@ -40,4 +40,13 @@ public LuaValue call(LuaValue name, LuaValue value) {
     }
   };
 
+  public OneArgFunction print = new OneArgFunction() {
+    @Override
+    public LuaValue call(LuaValue msg) {
+      System.out.println(msg.tojstring());
+      logger.info(msg.tojstring());
+      return NIL;
+    }
+  };
+
 }
diff --git a/core/src/main/java/ship/test/Athena.java b/core/src/main/java/ship/test/Athena.java
index 0e1bcf5..d97bf90 100644
--- a/core/src/main/java/ship/test/Athena.java
+++ b/core/src/main/java/ship/test/Athena.java
@@ -31,8 +31,9 @@ public LuaValue call(final LuaValue modname, final LuaValue env) {
     final LuaValue system = tableOf();
     system.set("getItem", aergoMock.getItem);
     system.set("setItem", aergoMock.setItem);
-
+    system.set("print", aergoMock.print);
     env.set("system", system);
+
     return library;
   }
 }