diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 06ea4749ebd9826a3d7b8b0a9798a1cc797f4d61..0afbb2658cbc0d9caf8f6accd2c8d9e50710e777 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -119,7 +119,7 @@ static DEFINE_PER_CPU(struct cpc_desc *, cpc_desc_ptr);
  * to PCC commands. Keeping it high enough to cover emulators where
  * the processors run painfully slow.
  */
-#define NUM_RETRIES 500
+#define NUM_RETRIES 500ULL
 
 struct cppc_attr {
 	struct attribute attr;