--- a/make/gendata/GendataTZDB.gmk	Tue Sep 12 19:03:39 2017 +0200
+++ b/make/gendata/GendataTZDB.gmk	Tue Sep 12 19:03:56 2017 +0200
@@ -28,7 +28,7 @@
 #
 # Time zone data file creation
 #
-TZDATA_DIR := $(JDK_TOPDIR)/make/data/tzdata
+TZDATA_DIR := $(TOPDIR)/make/data/tzdata
 TZDATA_TZFILE := africa antarctica asia australasia europe northamerica pacificnew southamerica backward etcetera gmt jdk11_backward
 TZDATA_TZFILES := $(addprefix $(TZDATA_DIR)/,$(TZDATA_TZFILE))