--- a/make/lib/NetworkingLibraries.gmk	Tue Sep 12 19:03:39 2017 +0200
+++ b/make/lib/NetworkingLibraries.gmk	Tue Sep 12 19:03:56 2017 +0200
@@ -36,7 +36,7 @@
     DISABLED_WARNINGS_clang := parentheses-equality constant-logical-operand, \
     DISABLED_WARNINGS_microsoft := 4244 4047 4133 4996, \
     DISABLED_WARNINGS_solstudio := E_ARG_INCOMPATIBLE_WITH_ARG_L, \
-    MAPFILE := $(JDK_TOPDIR)/make/mapfiles/libnet/mapfile-vers, \
+    MAPFILE := $(TOPDIR)/make/mapfiles/libnet/mapfile-vers, \
     LDFLAGS := $(LDFLAGS_JDKLIB) \
         $(call SET_SHARED_LIBRARY_ORIGIN), \
     LDFLAGS_windows := -delayload:secur32.dll -delayload:iphlpapi.dll, \