diff --git a/src/main/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListener.java b/src/main/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListener.java
index f516c73..ceb1585 100644
--- a/src/main/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListener.java
+++ b/src/main/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListener.java
@@ -23,7 +23,6 @@
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.IdentityHashMap;
-import java.util.Iterator;
 import java.util.Map;
 import java.util.Stack;
 
@@ -522,8 +521,8 @@
     private void flushDependencyManagement( DependencyNode node )
     {
         Artifact artifact = node.getArtifact();
-        String premanagedVersion = (String) managedVersions.get( artifact.getId() );
-        String premanagedScope = (String) managedScopes.get( artifact.getId() );
+        String premanagedVersion = managedVersions.get( artifact.getId() );
+        String premanagedScope = managedScopes.get( artifact.getId() );
         
         if ( premanagedVersion != null || premanagedScope != null )
         {