diff --git a/Makefile b/Makefile
index a12e3ea49a64d7337e648ac89e00655bf624e81b..8ba2bfc2cc79544a371b21630ff3c8f67c0d63b0 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,8 @@
 TOPDIR:=${CURDIR}
 LC_ALL:=C
 LANG:=C
-export TOPDIR LC_ALL LANG
+TZ:=UTC
+export TOPDIR LC_ALL LANG TZ
 
 empty:=
 space:= $(empty) $(empty)