diff --git a/eo-maven-plugin/src/main/java/org/eolang/maven/rust/Cargo.java b/eo-maven-plugin/src/main/java/org/eolang/maven/rust/Cargo.java
index d0757f3739..c87d7a1345 100644
--- a/eo-maven-plugin/src/main/java/org/eolang/maven/rust/Cargo.java
+++ b/eo-maven-plugin/src/main/java/org/eolang/maven/rust/Cargo.java
@@ -35,11 +35,8 @@
 /**
  * Class to manipulate Cargo.toml file.
  * @since 1.0
- * @todo #2239:60 min. Make this class extending Savable class.
- *  This class have save method and needs to have explanatory
- *  comment too via Commented class.
  */
-public class Cargo extends Savable {
+public final class Cargo extends Savable {
     /**
      * Package attributes.
      */
diff --git a/eo-maven-plugin/src/main/java/org/eolang/maven/rust/Native.java b/eo-maven-plugin/src/main/java/org/eolang/maven/rust/Native.java
index 168b2c60b4..4ed63c1e11 100644
--- a/eo-maven-plugin/src/main/java/org/eolang/maven/rust/Native.java
+++ b/eo-maven-plugin/src/main/java/org/eolang/maven/rust/Native.java
@@ -60,11 +60,11 @@ String content() {
             "import org.eolang.Universe;",
             String.format(
                 "public class %s {",
-                name
+                this.name
             ),
             String.format(
                 "    public static native byte[] %s",
-                name
+                this.name
             ),
             "        (final Universe universe);",
             "}"