diff --git a/conf.php b/conf.php
index 503eb40..e4d6aad 100644
--- a/conf.php
+++ b/conf.php
@@ -2,3 +2,4 @@
 
 	define('SHOPIFY_APP_API_KEY', '');
 	define('SHOPIFY_APP_SHARED_SECRET', '');
+	define('REDIRECT_URI', '');
diff --git a/oauth.php b/oauth.php
index e299f44..e416d9e 100644
--- a/oauth.php
+++ b/oauth.php
@@ -14,7 +14,7 @@
 	# Step 2: http://docs.shopify.com/api/authentication/oauth#asking-for-permission
 	if (!isset($_GET['code']))
 	{
-		$permission_url = shopify\authorization_url($_GET['shop'], SHOPIFY_APP_API_KEY, array('read_content', 'write_content', 'read_themes', 'write_themes', 'read_products', 'write_products', 'read_customers', 'write_customers', 'read_orders', 'write_orders', 'read_script_tags', 'write_script_tags', 'read_fulfillments', 'write_fulfillments', 'read_shipping', 'write_shipping'));
+		$permission_url = shopify\authorization_url($_GET['shop'], SHOPIFY_APP_API_KEY, array('read_content', 'write_content', 'read_themes', 'write_themes', 'read_products', 'write_products', 'read_customers', 'write_customers', 'read_orders', 'write_orders', 'read_script_tags', 'write_script_tags', 'read_fulfillments', 'write_fulfillments', 'read_shipping', 'write_shipping'), REDIRECT_URI);
 		die("<script> top.location.href='$permission_url'</script>");
 	}
 
@@ -46,4 +46,4 @@
 	}
 
 
-?>
\ No newline at end of file
+?>