diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/ResourceEnum.java b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/ResourceEnum.java
index a80bd5c5d..95ff559a5 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/ResourceEnum.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/ResourceEnum.java
@@ -20,7 +20,6 @@
 
 package org.navalplanner.business.resources.entities;
 
-import static org.navalplanner.business.i18n.I18nHelper._;
 
 
 /**
@@ -32,6 +31,13 @@ public enum ResourceEnum {
     WORKER(Worker.class, _("WORKER")),
     MACHINE(Machine.class, _("MACHINE"));
 
+    /**
+     * Forces to mark the string as needing translation
+     */
+    private static String _(String string) {
+        return string;
+    }
+
     private Class<? extends Resource> klass;
     private final String displayName;