diff --git a/ArmPkg/Library/ArmDmaLib/ArmDmaLib.c b/ArmPkg/Library/ArmDmaLib/ArmDmaLib.c
index e836feff1e..6afce87024 100644
--- a/ArmPkg/Library/ArmDmaLib/ArmDmaLib.c
+++ b/ArmPkg/Library/ArmDmaLib/ArmDmaLib.c
@@ -126,7 +126,7 @@ DmaMap (
         CopyMem (Buffer, HostAddress, *NumberOfBytes);
       }
 
-      *DeviceAddress = (PHYSICAL_ADDRESS)(UINTN)Buffer;
+      *DeviceAddress = ConvertToPhysicalAddress ((UINTN)Buffer);
     } else {
       Map->DoubleBuffer  = FALSE;
     }