diff --git a/includes/abstracts/abstract-wc-product.php b/includes/abstracts/abstract-wc-product.php
index 0f0738ac098..b33d9605815 100644
--- a/includes/abstracts/abstract-wc-product.php
+++ b/includes/abstracts/abstract-wc-product.php
@@ -1066,7 +1066,8 @@ class WC_Product extends WC_Abstract_Legacy_Product {
 	 * @param array $default_attributes List of default attributes.
 	 */
 	public function set_default_attributes( $default_attributes ) {
-		$this->set_prop( 'default_attributes', array_filter( (array) $default_attributes ) );
+		$this->set_prop( 'default_attributes',
+			array_filter( (array) $default_attributes, 'wc_array_filter_default_attributes' ) );
 	}
 
 	/**
diff --git a/includes/wc-attribute-functions.php b/includes/wc-attribute-functions.php
index a79d27697cd..f739d73929f 100644
--- a/includes/wc-attribute-functions.php
+++ b/includes/wc-attribute-functions.php
@@ -332,3 +332,15 @@ function wc_is_attribute_in_product_name( $attribute, $name ) {
 	$is_in_name = stristr( $name, ' ' . $attribute . ',' ) || 0 === stripos( strrev( $name ), strrev( ' ' . $attribute ) );
 	return apply_filters( 'woocommerce_is_attribute_in_product_name', $is_in_name, $attribute, $name );
 }
+
+/**
+ * Callback for array filter to get default attributes.  Will allow for '0' string values, but regard all other
+ * class PHP FALSE equivalents normally.
+ *
+ * @since 3.1.0
+ * @param mixed $attribute  Attribute being considered for exclusion from parent array.
+ * @return bool
+ */
+function wc_array_filter_default_attributes( $attribute ) {
+	return ( ! empty( $attribute ) || $attribute === '0' );
+}
diff --git a/tests/unit-tests/product/data-store.php b/tests/unit-tests/product/data-store.php
index 1de43388f29..054387a1cb2 100644
--- a/tests/unit-tests/product/data-store.php
+++ b/tests/unit-tests/product/data-store.php
@@ -316,7 +316,7 @@ class WC_Tests_Product_Data_Store extends WC_Unit_Test_Case {
 		$product->delete();
 	}
 
-	function test_varation_save_attributes() {
+	function test_variation_save_attributes() {
 		// Create a variable product with a color attribute.
 		$product = new WC_Product_Variable;
 
@@ -350,6 +350,44 @@ class WC_Tests_Product_Data_Store extends WC_Unit_Test_Case {
 		$this->assertEquals( 'green', $_attribute['color'] );
 	}
 
+	public function test_save_default_attributes() {
+
+		// Create a variable product with sold individually.
+		$product = new WC_Product_Variable;
+		$product->save();
+		$product_id = $product->get_id();
+
+		// Save with a set of FALSE equivalents and some values we expect to come through as true.  We should see
+		// string types with a value of '0' making it through filtration.
+		$test_object = new stdClass();
+		$test_object->property = '12345';
+		$product->set_default_attributes( array(
+			'sample-attribute-false-0' => 0,
+			'sample-attribute-false-1' => false,
+			'sample-attribute-false-2' => '',
+			'sample-attribute-false-3' => null,
+			'sample-attribute-true-0' => '0',
+			'sample-attribute-true-1' => 1,
+			'sample-attribute-true-2' => 'true',
+			'sample-attribute-true-3' => 'false',
+			'sample-attribute-true-4' => array( 'exists' => 'false' ),
+			'sample-attribute-false-4' => $test_object,
+		));
+		$product->save();
+
+		// Revive the product from the database and analyze results
+		$product = wc_get_product( $product_id );
+		$default_attributes = $product->get_default_attributes();
+		$this->assertEquals( $default_attributes, array(
+			'sample-attribute-true-0' => '0',
+			'sample-attribute-true-1' => 1,
+			'sample-attribute-true-2' => 'true',
+			'sample-attribute-true-3' => 'false',
+			'sample-attribute-true-4' => array( 'exists' => 'false' ),
+			'sample-attribute-false-4' => $test_object,
+		));
+	}
+
 	function test_variable_child_has_dimensions() {
 		$product = new WC_Product_Variable;
 		$product->save();