diff --git a/adapter/src/main/java/com/iluwatar/adapter/Captain.java b/adapter/src/main/java/com/iluwatar/adapter/Captain.java
index 369016980..8593ca321 100644
--- a/adapter/src/main/java/com/iluwatar/adapter/Captain.java
+++ b/adapter/src/main/java/com/iluwatar/adapter/Captain.java
@@ -26,7 +26,7 @@ package com.iluwatar.adapter;
  * The Captain uses {@link RowingBoat} to sail. <br>
  * This is the client in the pattern.
  */
-public class Captain implements RowingBoat {
+public class Captain {
 
   private RowingBoat rowingBoat;
 
@@ -40,7 +40,6 @@ public class Captain implements RowingBoat {
     this.rowingBoat = rowingBoat;
   }
 
-  @Override
   public void row() {
     rowingBoat.row();
   }
diff --git a/adapter/src/test/java/com/iluwatar/adapter/AdapterPatternTest.java b/adapter/src/test/java/com/iluwatar/adapter/AdapterPatternTest.java
index 033440b81..82a951e30 100644
--- a/adapter/src/test/java/com/iluwatar/adapter/AdapterPatternTest.java
+++ b/adapter/src/test/java/com/iluwatar/adapter/AdapterPatternTest.java
@@ -66,7 +66,7 @@ public class AdapterPatternTest {
    */
   @Test
   public void testAdapter() {
-    RowingBoat captain = (RowingBoat) beans.get(ROWING_BEAN);
+    Captain captain = (Captain) beans.get(ROWING_BEAN);
 
     // when captain moves
     captain.row();