diff --git a/src/soc/intel/xeon_sp/spr/chip.c b/src/soc/intel/xeon_sp/spr/chip.c
index 16e059b..f9c43db 100644
--- a/src/soc/intel/xeon_sp/spr/chip.c
+++ b/src/soc/intel/xeon_sp/spr/chip.c
@@ -92,7 +92,9 @@
 
 static void set_pcu_locks(void)
 {
-	for (uint32_t socket = 0; socket < soc_get_num_cpus(); ++socket) {
+	for (uint32_t socket = 0; socket < CONFIG_MAX_SOCKET; ++socket) {
+		if (!soc_cpu_is_enabled(socket))
+			continue;
 		const uint32_t bus = get_ubox_busno(socket, UNCORE_BUS_1);
 
 		/* configure PCU_CR0_FUN csrs */