diff --git a/src/dos/dos_execute.cpp b/src/dos/dos_execute.cpp
index 5f51e248..bb3c6232 100644
--- a/src/dos/dos_execute.cpp
+++ b/src/dos/dos_execute.cpp
@@ -165,7 +165,8 @@ bool DOS_NewPSP(Bit16u segment, Bit16u size)
 {
 	DOS_PSP psp(segment);
 	psp.MakeNew(size);
-	psp.CopyFileTable(&DOS_PSP(psp.GetParent()));
+	DOS_PSP psp_parent(psp.GetParent());
+	psp.CopyFileTable(&psp_parent);
 	return true;
 };