Index: /trunk/Makefile.kmk
===================================================================
--- /trunk/Makefile.kmk	(revision 68785)
+++ /trunk/Makefile.kmk	(revision 68786)
@@ -285,5 +285,5 @@
  		$$(buildserver-additions_0_OUTDIR)/VBoxGuestAdditions.zip
 	$(call MSG_L1,Unpacking additions archive)
-	$(QUIET)$(TOOL_ZIP_UNPACK) $(TOOL_ZIP_UNPACKFLAGS) -o $< -d $(PATH_TARGET)
+	$(QUIET)$(TOOL_ZIP_UNPACK) $(TOOL_ZIP_UNPACKFLAGS) -DD -o $< -d $(PATH_TARGET)
 	$(APPEND) -t $@ "done"
 
@@ -320,5 +320,5 @@
 		$$(buildserver-docs_0_OUTDIR)/VBoxDocumentation.zip
 	$(call MSG_L1,Unpacking documentation)
-	$(QUIET)$(TOOL_ZIP_UNPACK) $(TOOL_ZIP_UNPACKFLAGS) -o $< -d $(PATH_TARGET)
+	$(QUIET)$(TOOL_ZIP_UNPACK) $(TOOL_ZIP_UNPACKFLAGS) -DD -o $< -d $(PATH_TARGET)
 	$(APPEND) -t $@ "done"
 
@@ -374,5 +374,5 @@
    		$$(buildserver-efifw_0_OUTDIR)/VBoxEfiFirmware.zip
 	$(call MSG_L1,Unpacking EFI firmware)
-	$(QUIET)$(TOOL_ZIP_UNPACK) $(TOOL_ZIP_UNPACKFLAGS) -o $< -d $(buildserver-efifw_0_OUTDIR)
+	$(QUIET)$(TOOL_ZIP_UNPACK) $(TOOL_ZIP_UNPACKFLAGS) -DD -o $< -d $(buildserver-efifw_0_OUTDIR)
 	$(foreach arch, amd64 x86, \
 		$(NLTAB) $(QUIET)$(TEST) '!' -d $(dir $@)/$(arch) -- $(MKDIR_EXT) -- $(dir $@)/$(arch) \