Index: /trunk/src/VBox/Devices/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Devices/Makefile.kmk	(revision 53298)
+++ /trunk/src/VBox/Devices/Makefile.kmk	(revision 53299)
@@ -566,5 +566,4 @@
   	Network/slirp/debug.c \
  	Network/slirp/ip_icmp.c \
-	Network/slirp/ip_icmpwin.c \
  	Network/slirp/ip_input.c \
  	Network/slirp/ip_output.c \
@@ -582,4 +581,8 @@
  	Network/slirp/tftp.c \
  	Network/slirp/dnsproxy/dnsproxy.c
+
+ ifeq ($(KBUILD_TARGET), win)
+  VBOX_SLIRP_SOURCES += Network/slirp/ip_icmpwin.c
+ endif
 
  ifneq ($(KBUILD_TARGET), win)