Index: /trunk/src/VBox/Runtime/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Runtime/Makefile.kmk	(revision 35023)
+++ /trunk/src/VBox/Runtime/Makefile.kmk	(revision 35024)
@@ -99,5 +99,8 @@
 
 # Always build the ntdll import libraries on windows.
-LIBRARIES.win += RuntimeR3NtDll-amd64 RuntimeR3NtDll-x86
+LIBRARIES.win += RuntimeR3NtDll-x86
+if1of (amd64, $(KBUILD_TARGET_ARCH) $(KBUILD_HOST_ARCH))
+ LIBRARIES.win += RuntimeR3NtDll-amd64
+endif