diff --git a/classes/class-wc-tax.php b/classes/class-wc-tax.php
index d6f1f101b70..2768b6a2689 100644
--- a/classes/class-wc-tax.php
+++ b/classes/class-wc-tax.php
@@ -19,8 +19,8 @@ class WC_Tax {
 		if (!is_array($this->parsed_rates)) :
 			global $woocommerce;
 			
-			$tax_rates 			= (array) get_option('woocommerce_tax_rates');
-			$local_tax_rates 	= (array) get_option('woocommerce_local_tax_rates');
+			$tax_rates 			= array_filter( (array) get_option('woocommerce_tax_rates') );
+			$local_tax_rates 	= array_filter( (array) get_option('woocommerce_local_tax_rates') );
 			
 			$parsed_rates 		= array();
 			$flat_rates			= array();