diff --git a/kernel/process.c b/kernel/process.c
index 1d540315..11cfbb14 100644
--- a/kernel/process.c
+++ b/kernel/process.c
@@ -1158,7 +1158,7 @@ int add_process_memory_range(struct process_vm *vm,
 	insert_vm_range_list(vm, range);
 
 	/* Clear content! */
-	if (!(flag & (VR_REMOTE | VR_DEMAND_PAGING))
+	if (phys != NOPHYS && !(flag & (VR_REMOTE | VR_DEMAND_PAGING))
 			&& ((flag & VR_PROT_MASK) != VR_PROT_NONE)) {
 #if 1
 			memset((void*)phys_to_virt(phys), 0, end - start);