Index: src/main/java/org/apache/maven/plugins/shade/mojo/ShadeMojo.java
===================================================================
--- src/main/java/org/apache/maven/plugins/shade/mojo/ShadeMojo.java	(revision 795118)
+++ src/main/java/org/apache/maven/plugins/shade/mojo/ShadeMojo.java	(working copy)
@@ -716,6 +716,12 @@
             dependencies.add( d );
 
             String id = d.getGroupId() + ":" + d.getArtifactId();
+            
+            String classifier = d.getClassifier();
+            //if classifier is used then add it to id 
+            if(classifier != null && classifier.length() > 0 ) {
+              id += ":" + classifier;
+            }
 
             if ( artifactsToRemove.contains( id ) )
             {