diff --git a/src/main/java/com/basho/riak/client/core/query/UserMetadata/RiakUserMetadata.java b/src/main/java/com/basho/riak/client/core/query/UserMetadata/RiakUserMetadata.java
index de46a5a01..fbb10ea93 100644
--- a/src/main/java/com/basho/riak/client/core/query/UserMetadata/RiakUserMetadata.java
+++ b/src/main/java/com/basho/riak/client/core/query/UserMetadata/RiakUserMetadata.java
@@ -78,7 +78,7 @@ public boolean containsKey(String key)
      */
     public boolean containsKey(String key, Charset charset)
     {
-        return meta.containsKey(BinaryValue.unsafeCreate(key.getBytes()));
+        return meta.containsKey(BinaryValue.unsafeCreate(key.getBytes(charset)));
     }
     
     /**