diff --git a/src/helpers/util.js b/src/helpers/util.js
index 16460c6c52..b48107ebd8 100644
--- a/src/helpers/util.js
+++ b/src/helpers/util.js
@@ -125,7 +125,7 @@ module.exports = {
   * @param {String} value - value to sha3
   * @return {Object} - return sha3ied value
   */
-  sha3_32: function (value) {
+  sha3_256: function (value) {
     var ret = ethutil.bufferToHex(ethutil.setLengthLeft(value, 32))
     ret = ethutil.sha3(ret)
     return ethutil.bufferToHex(ret)
diff --git a/src/solidity/types/ArrayType.js b/src/solidity/types/ArrayType.js
index 8f0f409678..f6ce23c0ac 100644
--- a/src/solidity/types/ArrayType.js
+++ b/src/solidity/types/ArrayType.js
@@ -43,7 +43,7 @@ class ArrayType extends RefType {
     }
     if (this.arraySize === 'dynamic') {
       size = util.toBN('0x' + slotValue)
-      currentLocation.slot = helper.sha3_32(location.slot)
+      currentLocation.slot = helper.sha3_256(location.slot)
     } else {
       size = new BN(this.arraySize)
     }
diff --git a/src/solidity/types/DynamicByteArray.js b/src/solidity/types/DynamicByteArray.js
index 2dd8edbe9e..f45fa8fa44 100644
--- a/src/solidity/types/DynamicByteArray.js
+++ b/src/solidity/types/DynamicByteArray.js
@@ -23,7 +23,7 @@ class DynamicByteArray extends RefType {
     var bn = new BN(value, 16)
     if (bn.testn(0)) {
       var length = bn.div(new BN(2))
-      var dataPos = new BN(helper.sha3_32(location.slot).replace('0x', ''), 16)
+      var dataPos = new BN(helper.sha3_256(location.slot).replace('0x', ''), 16)
       var ret = ''
       var currentSlot = '0x'
       try {
diff --git a/src/storage/storageViewer.js b/src/storage/storageViewer.js
index 37b8463949..1252276d38 100644
--- a/src/storage/storageViewer.js
+++ b/src/storage/storageViewer.js
@@ -30,7 +30,7 @@ class StorageViewer {
     * @param {Function} - callback - {key, hashedKey, value} -
     */
   storageSlot (slot, callback) {
-    var hashed = helper.sha3_32(slot)
+    var hashed = helper.sha3_256(slot)
     this.storageResolver.storageSlot(hashed, this.context.tx, this.context.stepIndex, this.storageChanges, this.context.address, (error, result) => {
       if (error) {
         callback(error)
diff --git a/src/trace/traceCache.js b/src/trace/traceCache.js
index 7a94109c7b..3d31012270 100644
--- a/src/trace/traceCache.js
+++ b/src/trace/traceCache.js
@@ -87,7 +87,7 @@ TraceCache.prototype.pushStoreChanges = function (index, address, key, value) {
     'address': address,
     'key': key,
     'value': value,
-    'hashedKey': helper.sha3_32(key)
+    'hashedKey': helper.sha3_256(key)
   }
   this.storageChanges.push(index)
 }
diff --git a/test/solidity/mockStorageResolver.js b/test/solidity/mockStorageResolver.js
index 2f9f248f0d..bdf55ba575 100644
--- a/test/solidity/mockStorageResolver.js
+++ b/test/solidity/mockStorageResolver.js
@@ -5,7 +5,7 @@ class MockStorageResolver {
   constructor (_storage) {
     this.storage = {}
     for (var k in _storage) {
-      var hashed = util.sha3_32(k)
+      var hashed = util.sha3_256(k)
       this.storage[hashed] = {
         hashed: hashed,
         key: k,
@@ -19,7 +19,7 @@ class MockStorageResolver {
   }
 
   storageSlot (slot, callback) {
-    var hashed = util.sha3_32(slot)
+    var hashed = util.sha3_256(slot)
     callback(null, this.storage[hashed])
   }