diff --git a/reactos/drivers/storage/class/class2/class2.c b/reactos/drivers/storage/class/class2/class2.c
index e3b830e1bea..60268748ab9 100644
--- a/reactos/drivers/storage/class/class2/class2.c
+++ b/reactos/drivers/storage/class/class2/class2.c
@@ -1510,7 +1510,7 @@ Return Value:
             srb,
             irpStack->MajorFunction,
             irpStack->MajorFunction == IRP_MJ_DEVICE_CONTROL ? irpStack->Parameters.DeviceIoControl.IoControlCode : 0,
-            MAXIMUM_RETRIES - ((ULONG_PTR)irpStack->Parameters.Others.Argument4),
+            MAXIMUM_RETRIES - PtrToUlong(irpStack->Parameters.Others.Argument4),
             &status);
 
         //
@@ -1662,7 +1662,7 @@ Return Value:
             srb,
             irpStack->MajorFunction,
             irpStack->MajorFunction == IRP_MJ_DEVICE_CONTROL ? irpStack->Parameters.DeviceIoControl.IoControlCode : 0,
-            MAXIMUM_RETRIES - ((ULONG_PTR)irpStack->Parameters.Others.Argument4),
+            MAXIMUM_RETRIES - PtrToUlong(irpStack->Parameters.Others.Argument4),
             &status);
 
         //