diff --git a/src/timezone/Makefile b/src/timezone/Makefile
index 40134976a1..5dcf2d0acc 100644
--- a/src/timezone/Makefile
+++ b/src/timezone/Makefile
@@ -4,7 +4,7 @@
 #    Makefile for the timezone library
 
 # IDENTIFICATION
-#    $PostgreSQL: pgsql/src/timezone/Makefile,v 1.13 2004/08/08 03:57:35 momjian Exp $
+#    $PostgreSQL: pgsql/src/timezone/Makefile,v 1.14 2004/08/08 04:53:41 momjian Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -12,6 +12,8 @@ subdir = src/timezone
 top_builddir = ../..
 include $(top_builddir)/src/Makefile.global
 
+override CPPFLAGS := -DFRONTEND $(CPPFLAGS)
+
 # files to build into backend
 OBJS= localtime.o strftime.o pgtz.o dirmod.o