diff --git a/Makefile b/Makefile
index b80477f..6ec7a57 100644
--- a/Makefile
+++ b/Makefile
@@ -199,6 +199,7 @@ unexport CFLAGS
 unexport CXXFLAGS
 unexport GREP_OPTIONS
 unexport CONFIG_SITE
+unexport TERMINFO
 
 GNU_HOST_NAME:=$(shell support/gnuconfig/config.guess)