diff --git a/tests/test-mq b/tests/test-mq
--- a/tests/test-mq
+++ b/tests/test-mq
@@ -1,8 +1,7 @@
 #!/bin/sh
 
-HGRCPATH=$HGTMP/.hgrc; export HGRCPATH
-echo "[extensions]" >> $HGTMP/.hgrc
-echo "mq=" >> $HGTMP/.hgrc
+echo "[extensions]" >> $HGRCPATH
+echo "mq=" >> $HGRCPATH
 
 echo % help
 hg help mq
@@ -127,7 +126,7 @@ hg ci -Ama
 hg strip tip 2>&1 | sed 's/\(saving bundle to \).*/\1/'
 hg unbundle .hg/strip-backup/*
 
-cat >>$HGTMP/.hgrc <<EOF
+cat >>$HGRCPATH <<EOF
 [diff]
 git = True
 EOF