diff --git a/changelog/fix-fatal-errors-when-subscriptions-are-unavailable b/changelog/fix-fatal-errors-when-subscriptions-are-unavailable
new file mode 100644
index 00000000000..aa457b9b6f0
--- /dev/null
+++ b/changelog/fix-fatal-errors-when-subscriptions-are-unavailable
@@ -0,0 +1,4 @@
+Significance: patch
+Type: fix
+
+Fixing fatal errors when subscription classes are not available
diff --git a/includes/subscriptions/class-wc-payments-subscription-service.php b/includes/subscriptions/class-wc-payments-subscription-service.php
index 229bef20ae7..b68bd99cbbe 100644
--- a/includes/subscriptions/class-wc-payments-subscription-service.php
+++ b/includes/subscriptions/class-wc-payments-subscription-service.php
@@ -1080,6 +1080,10 @@ private function validate_subscription_data( $subscription_data ) {
 	 * @return bool True if store has active WCPay subscriptions, otherwise false.
 	 */
 	public static function store_has_active_wcpay_subscriptions() {
+		if ( ! function_exists( 'wcs_get_subscriptions' ) ) {
+			return false;
+		}
+
 		$active_wcpay_subscriptions = wcs_get_subscriptions(
 			[
 				'subscriptions_per_page' => 1,