diff --git a/ArmPkg/Library/ArmArchTimerLib/ArmArchTimerLib.c b/ArmPkg/Library/ArmArchTimerLib/ArmArchTimerLib.c
index eee030d16a..4b1c9ac49e 100644
--- a/ArmPkg/Library/ArmArchTimerLib/ArmArchTimerLib.c
+++ b/ArmPkg/Library/ArmArchTimerLib/ArmArchTimerLib.c
@@ -219,7 +219,7 @@ GetPerformanceCounter (
 UINT64
 EFIAPI
 GetPerformanceCounterProperties (
-  OUT      UINT64                    *StartValue,  OPTIONAL
+  OUT      UINT64                    *StartValue   OPTIONAL,
   OUT      UINT64                    *EndValue     OPTIONAL
   )
 {
diff --git a/ArmPkg/Library/DebugAgentSymbolsBaseLib/DebugAgentSymbolsBaseLib.c b/ArmPkg/Library/DebugAgentSymbolsBaseLib/DebugAgentSymbolsBaseLib.c
index 37cdb861a0..c8edc4f5cf 100644
--- a/ArmPkg/Library/DebugAgentSymbolsBaseLib/DebugAgentSymbolsBaseLib.c
+++ b/ArmPkg/Library/DebugAgentSymbolsBaseLib/DebugAgentSymbolsBaseLib.c
@@ -268,7 +268,7 @@ VOID
 EFIAPI
 InitializeDebugAgent (
   IN UINT32                InitFlag,
-  IN VOID                  *Context, OPTIONAL
+  IN VOID                  *Context  OPTIONAL,
   IN DEBUG_AGENT_CONTINUE  Function  OPTIONAL
   )
 {
@@ -335,4 +335,3 @@ SaveAndSetDebugTimerInterrupt (
 {
   return FALSE;
 }
-