diff --git a/MdePkg/Include/Register/Intel/Cpuid.h b/MdePkg/Include/Register/Intel/Cpuid.h
index 6f77e174c1..5ec85ba561 100644
--- a/MdePkg/Include/Register/Intel/Cpuid.h
+++ b/MdePkg/Include/Register/Intel/Cpuid.h
@@ -1587,9 +1587,9 @@ typedef union {
     ///
     UINT32  EnumeratesSupportForCapability:1;
     ///
-    /// [Bit 30] Reserved.
+    /// [Bit 30] Enumerates support for the IA32_CORE_CAPABILITIES MSR.
     ///
-    UINT32  Reserved3:1;
+    UINT32  EnumeratesSupportForCoreCapabilitiesMsr:1;
     ///
     /// [Bit 31] Enumerates support for Speculative Store Bypass Disable (SSBD).
     /// Processors that set this bit sup-port the IA32_SPEC_CTRL MSR. They allow