diff --git a/modules/ppcp-api-client/services.php b/modules/ppcp-api-client/services.php
index 4dcf39223..97306058f 100644
--- a/modules/ppcp-api-client/services.php
+++ b/modules/ppcp-api-client/services.php
@@ -322,7 +322,13 @@ return array(
 	},
 
 	'api.shop.currency'                         => static function ( ContainerInterface $container ) : string {
-		return get_woocommerce_currency();
+		// We use option instead of get_woocommerce_currency
+		// because it will not be overridden by currency switching plugins.
+		$currency = get_option( 'woocommerce_currency' );
+		if ( ! $currency ) {
+			return 'NO_CURRENCY'; // Unlikely to happen.
+		}
+		return $currency;
 	},
 	'api.shop.country'                          => static function ( ContainerInterface $container ) : string {
 		$location = wc_get_base_location();
diff --git a/tests/PHPUnit/ModularTestCase.php b/tests/PHPUnit/ModularTestCase.php
index 9756108ef..de3858c19 100644
--- a/tests/PHPUnit/ModularTestCase.php
+++ b/tests/PHPUnit/ModularTestCase.php
@@ -26,7 +26,6 @@ class ModularTestCase extends TestCase
         when('get_site_url')->justReturn('example.com');
         when('get_bloginfo')->justReturn('My Shop');
         when('wc_get_base_location')->justReturn(['country' => 'US']);
-        when('get_woocommerce_currency')->justReturn('USD');
         when('WC')->justReturn((object) [
         	'session' => null,
 		]);