diff --git a/beacon_chain/utils/hashing/src/merkle_root.rs b/beacon_chain/utils/hashing/src/merkle_root.rs
index 3251154f0..9a05ed450 100644
--- a/beacon_chain/utils/hashing/src/merkle_root.rs
+++ b/beacon_chain/utils/hashing/src/merkle_root.rs
@@ -1,8 +1,9 @@
 use types::{Hash256}
 use hashing::canonical_hash;
 
-fn merkle_root(values: Vec<>) -> Hash256 {
-    let o = values.len();
+fn merkle_root(values: Vec<T>) -> Hash256 {
+    let mut o = vec![0; values.len()];
+    o.append(values);
 
     for v in &values {
         canonical_hash(v.as_bytes());
@@ -19,8 +20,8 @@ mod tests {
         let test_leaf_2 = canonical_hash(values[1]);
         let test_leaf_3 = canonical_hash(values[2]);
         let test_leaf_4 = canonical_hash(values[3]);
-        let test_node_1 = canonical_hash(vec![test_leaf_1, test_leaf_2]);
-        let test_node_2 = canonical_hash(vec![test_leaf_3, test_leaf_4]);
+        let test_node_1 = canonical_hash(vec![test_leaf_4, test_leaf_3]);
+        let test_node_2 = canonical_hash(vec![test_leaf_2, test_leaf_1]);
         let test_root   = canonical_hash(vec![test_node_1, test_node_2]);
 
         let result      = merkle_root(values);