diff --git a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
index d2224a20aa..ebf03d30c1 100644
--- a/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
+++ b/IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c
@@ -1733,8 +1733,8 @@ CheckKeyboardConnect (
 }
 
 /**
-   Disable NULL pointer detection
-*/
+  Disable NULL pointer detection.
+**/
 VOID
 DisableNullDetection (
   VOID
@@ -1780,8 +1780,8 @@ DisableNullDetection (
 }
 
 /**
-   Enable NULL pointer detection
-*/
+   Enable NULL pointer detection.
+**/
 VOID
 EnableNullDetection (
   VOID
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBios.c b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBios.c
index 3176a989f6..e009999fbd 100644
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBios.c
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBios.c
@@ -794,8 +794,8 @@ ToggleEndOfDxeStatus (
 //
 
 /**
-   Enable NULL pointer detection
-*/
+   Enable NULL pointer detection.
+**/
 VOID
 EnableNullDetection (
   VOID
@@ -844,8 +844,8 @@ EnableNullDetection (
 }
 
 /**
-   Disable NULL pointer detection
-*/
+   Disable NULL pointer detection.
+**/
 VOID
 DisableNullDetection (
   VOID
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
index 20dfef3fec..86a3b09080 100644
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
@@ -1545,16 +1545,16 @@ LegacyBiosInstallVgaRom (
   );
 
 /**
-   Enable NULL pointer detection
-*/
+   Enable NULL pointer detection.
+**/
 VOID
 EnableNullDetection (
   VOID
   );
 
 /**
-   Disable NULL pointer detection
-*/
+   Disable NULL pointer detection.
+**/
 VOID
 DisableNullDetection (
   VOID