diff --git a/arch/x86/core/spec_ctrl.c b/arch/x86/core/spec_ctrl.c
index 9a8742262f3..cc8c917f0ce 100644
--- a/arch/x86/core/spec_ctrl.c
+++ b/arch/x86/core/spec_ctrl.c
@@ -14,7 +14,7 @@
 
 #define CPUID_EXTENDED_FEATURES_LVL 7
 
-#define CPUID_SPEC_CTRL BIT(26)
+#define CPUID_SPEC_CTRL BIT(31)
 #define SPEC_CTRL_SSBD BIT(2)
 
 static int