diff --git a/util/inteltool/powermgt.c b/util/inteltool/powermgt.c
index 9933b04891..2dfc05d64f 100644
--- a/util/inteltool/powermgt.c
+++ b/util/inteltool/powermgt.c
@@ -669,7 +669,7 @@ static const io_register_t i63xx_pm_registers[] = {
 
 int print_pmbase(struct pci_dev *sb, struct pci_access *pacc)
 {
-	size_t i, size;
+	size_t i, size = 0;
 	uint16_t pmbase;
 	const io_register_t *pm_registers;
 	uint64_t pwrmbase_phys = 0;