diff --git a/ArmPkg/Include/Library/OemMiscLib.h b/ArmPkg/Include/Library/OemMiscLib.h
index d1ac81f73d..6dcc76a214 100644
--- a/ArmPkg/Include/Library/OemMiscLib.h
+++ b/ArmPkg/Include/Library/OemMiscLib.h
@@ -128,14 +128,12 @@ OemGetMaxProcessors (
 
 /** Gets the type of chassis for the system.
 
-  @param ChassisType The type of the chassis.
-
-  @retval EFI_SUCCESS The chassis type was fetched successfully.
+  @retval The type of the chassis.
 **/
-EFI_STATUS
+MISC_CHASSIS_TYPE
 EFIAPI
 OemGetChassisType (
-  OUT UINT8 *ChassisType
+  VOID
   );
 
 /** Returns whether the specified processor is present or not.
diff --git a/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLib.c b/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLib.c
index 5153c9d780..21f106f1e0 100644
--- a/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLib.c
+++ b/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLib.c
@@ -95,19 +95,16 @@ OemGetMaxProcessors (
 
 /** Gets the type of chassis for the system.
 
-  @param ChassisType The type of the chassis.
-
-  @retval EFI_SUCCESS The chassis type was fetched successfully.
+  @retval The type of the chassis.
 **/
-EFI_STATUS
+MISC_CHASSIS_TYPE
 EFIAPI
 OemGetChassisType (
-  UINT8 *ChassisType
+  VOID
   )
 {
   ASSERT (FALSE);
-  *ChassisType = MiscChassisTypeUnknown;
-  return EFI_SUCCESS;
+  return MiscChassisTypeUnknown;
 }
 
 /** Returns whether the specified processor is present or not.
diff --git a/ArmPkg/Universal/Smbios/SmbiosMiscDxe/Type03/MiscChassisManufacturerFunction.c b/ArmPkg/Universal/Smbios/SmbiosMiscDxe/Type03/MiscChassisManufacturerFunction.c
index e6adbceba2..fc4dba319a 100644
--- a/ArmPkg/Universal/Smbios/SmbiosMiscDxe/Type03/MiscChassisManufacturerFunction.c
+++ b/ArmPkg/Universal/Smbios/SmbiosMiscDxe/Type03/MiscChassisManufacturerFunction.c
@@ -23,27 +23,6 @@
 
 #include "SmbiosMisc.h"
 
-/**
- * Returns the chassis type in SMBIOS format.
- *
- * @return Chassis type
-**/
-UINT8
-GetChassisType (
-  VOID
-  )
-{
-  EFI_STATUS                      Status;
-  UINT8                           ChassisType;
-
-  Status = OemGetChassisType (&ChassisType);
-  if (EFI_ERROR (Status)) {
-    return 0;
-  }
-
-  return ChassisType;
-}
-
 /**
   This function makes boot time changes to the contents of the
   MiscChassisManufacturer (Type 3) record.
@@ -80,8 +59,6 @@ SMBIOS_MISC_TABLE_FUNCTION(MiscChassisManufacturer)
   CONTAINED_ELEMENT               ContainedElements;
   UINT8                           ExtendLength;
 
-  UINT8                           ChassisType;
-
   ExtendLength = 0;
 
   //
@@ -165,10 +142,7 @@ SMBIOS_MISC_TABLE_FUNCTION(MiscChassisManufacturer)
 
   SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE3) + ExtendLength + 1;
 
-  ChassisType = GetChassisType ();
-  if (ChassisType != 0) {
-    SmbiosRecord->Type  = ChassisType;
-  }
+  SmbiosRecord->Type = OemGetChassisType ();
 
   //ContainedElements
   ASSERT (ContainedElementCount < 2);