Index: /trunk/src/VBox/Main/webservice/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Main/webservice/Makefile.kmk	(revision 83651)
+++ /trunk/src/VBox/Main/webservice/Makefile.kmk	(revision 83652)
@@ -231,8 +231,10 @@
   LIBRARIES += vboxsoap
   vboxsoap_TEMPLATE = VBOXWEBR3EXE
-  ifeq ($(KBUILD_TARGET),win)
-   vboxsoap_USES     = vccprecomp
-   vboxsoap_PCH_HDR := $(VBOXWEB_SOAP_SERVER_H)
-   vboxsoap_CXXFLAGS += -Zm127
+  ifndef VBOX_WITHOUT_PRECOMPILED_HEADERS
+   ifeq ($(KBUILD_TARGET),win)
+    vboxsoap_USES     = vccprecomp
+    vboxsoap_PCH_HDR := $(VBOXWEB_SOAP_SERVER_H)
+    vboxsoap_CXXFLAGS += -Zm127
+   endif
   endif
   vboxsoap_CXXFLAGS += $(VBOX_C_CXX_FLAGS_NO_UNUSED_PARAMETERS)