diff --git a/plugins/woocommerce-blocks/src/BlockTypes/ProductCollection.php b/plugins/woocommerce-blocks/src/BlockTypes/ProductCollection.php
index b7a785b9101..b4a8b4e6a37 100644
--- a/plugins/woocommerce-blocks/src/BlockTypes/ProductCollection.php
+++ b/plugins/woocommerce-blocks/src/BlockTypes/ProductCollection.php
@@ -174,7 +174,7 @@ class ProductCollection extends AbstractBlock {
 
 		$block_context_query = $block->context['query'];
 		// phpcs:ignore WordPress.DB.SlowDBQuery
-		$block_context_query['tax_query'] = $query['tax_query'];
+		$block_context_query['tax_query'] = ! empty( $query['tax_query'] ) ? $query['tax_query'] : array();
 
 		return $this->get_final_frontend_query( $block_context_query, $page );
 	}