diff --git a/drivers/parallel/parport/fdo.c b/drivers/parallel/parport/fdo.c
index 82590607f48..deb9b63ba7e 100644
--- a/drivers/parallel/parport/fdo.c
+++ b/drivers/parallel/parport/fdo.c
@@ -161,7 +161,7 @@ FdoStartDevice(IN PDEVICE_OBJECT DeviceObject,
 
                 if (DeviceExtension->BaseAddress == 0)
                 {
-                    if (PartialDescriptor->u.Port.Length < 4)
+                    if (PartialDescriptor->u.Port.Length < 3)
                         return STATUS_INSUFFICIENT_RESOURCES;
 
                     DeviceExtension->BaseAddress = PartialDescriptor->u.Port.Start.u.LowPart;