diff --git a/src/soc/amd/stoneyridge/cpu.c b/src/soc/amd/stoneyridge/cpu.c
index 17fd9b9..d943deb 100644
--- a/src/soc/amd/stoneyridge/cpu.c
+++ b/src/soc/amd/stoneyridge/cpu.c
@@ -76,10 +76,10 @@
 	uint32_t psp_bar; /* Note: NDA BKDG names this 32-bit register BAR3 */
 	psp_bar = pci_read_config32(SOC_PSP_DEV, PCI_BASE_ADDRESS_4);
 	psp_bar &= ~PCI_BASE_ADDRESS_MEM_ATTR_MASK;
-	psp_msr = rdmsr(MSR_PSP_ADDR);
+	psp_msr = rdmsr(PSP_ADDR_MSR);
 	if (psp_msr.lo == 0) {
 		psp_msr.lo = psp_bar;
-		wrmsr(MSR_PSP_ADDR, psp_msr);
+		wrmsr(PSP_ADDR_MSR, psp_msr);
 	}
 }