diff --git a/package.json b/package.json
index 5b3b958..6587c8f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "spique",
-  "version": "1.0.7",
+  "version": "1.0.8",
   "description": "A spiral deque - high performance and dynamic queue size",
   "main": "spique.js",
   "scripts": {
diff --git a/spique.js b/spique.js
index 5cad24d..c8a3697 100644
--- a/spique.js
+++ b/spique.js
@@ -13,6 +13,7 @@
  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+"use strict";
 module.exports = Spique;
 
 function Spique(maxItems, ringSize) {
@@ -44,7 +45,7 @@ function Spique(maxItems, ringSize) {
 
   // push item(s) onto the end of the buffer
   this.enqueue = this.push = function() {
-    for(value of arguments) {
+    for(var value of arguments) {
       if(items >= maxItems)
         return new Error('Buffer is full');
       // add another ring if necessary
@@ -62,7 +63,7 @@ function Spique(maxItems, ringSize) {
 
   // push item(s) onto the start of the buffer
   this.unshift = function(value) {
-    for(value of arguments) {
+    for(var value of arguments) {
       if(items >= maxItems)
         return new Error('Buffer is full');
       // add another ring if necessary