diff --git a/reactos/drivers/wdm/audio/backpln/portcls/port_wavertstream.cpp b/reactos/drivers/wdm/audio/backpln/portcls/port_wavertstream.cpp
index f06945d8a01..16e83f61624 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/port_wavertstream.cpp
+++ b/reactos/drivers/wdm/audio/backpln/portcls/port_wavertstream.cpp
@@ -165,7 +165,7 @@ CPortWaveRTStreamInit::GetPhysicalPageAddress(
 
     Addr = MmGetPhysicalAddress(Buffer);
     Address->QuadPart = Addr.QuadPart;
-    Result.QuadPart = (PtrToUlong(Address));
+    Result.QuadPart = (ULONG_PTR)Address;
 
     return Result;
 }
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/propertyhandler.cpp b/reactos/drivers/wdm/audio/backpln/portcls/propertyhandler.cpp
index e086d4407bf..7dab0bea8f2 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/propertyhandler.cpp
+++ b/reactos/drivers/wdm/audio/backpln/portcls/propertyhandler.cpp
@@ -134,7 +134,7 @@ HandleDataIntersection(
             IoStatus->Information = Length;
             break;
         }
-        DataRange =  (PKSDATARANGE)	UlongToPtr(PtrToUlong(DataRange) + DataRange->FormatSize);
+        DataRange = (PKSDATARANGE)((PUCHAR)DataRange + DataRange->FormatSize);
     }
 
     IoStatus->Status = Status;
@@ -230,7 +230,7 @@ PinPropertyHandler(
     // get current irp stack
     IoStack = IoGetCurrentIrpStackLocation(Irp);
 
-    // get dispatch context 
+    // get dispatch context
     DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
 
     // Get the IrpTarget