diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index b0e58522780d..f5b7fc56fa4a 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -776,7 +776,7 @@ static const struct idle_cpu idle_cpu_avn = {
 #define ICPU(model, cpu) \
 	{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
 
-static const struct x86_cpu_id intel_idle_ids[] = {
+static const struct x86_cpu_id intel_idle_ids[] __initconst = {
 	ICPU(0x1a, idle_cpu_nehalem),
 	ICPU(0x1e, idle_cpu_nehalem),
 	ICPU(0x1f, idle_cpu_nehalem),