diff --git a/t/Makefile.am b/t/Makefile.am
index 6b8b867..ec8209b 100644
--- a/t/Makefile.am
+++ b/t/Makefile.am
@@ -74,7 +74,7 @@ EXTRA_DIST = README.md chainlint.sed \
 LOG_DRIVER = env AM_TAP_AWK='$(AWK)' HARNESS_ACTIVE=true \
 	$(SHELL) ../tap-driver.sh
 
-TEST_MOUNTS_DIR = test-mounts
+TEST_MOUNTS_DIR = /tmp/test-mounts
 TEST_OUTPUT_DIR = test-output
 PROVE_FILE = .prove
 
diff --git a/t/test-lib.sh b/t/test-lib.sh
index d7757e5..50f10fa 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -835,7 +835,7 @@ then
 fi
 
 # Test mount points
-TRASH_DIRECTORY="test-mounts/$(basename "$0" .t)"
+TRASH_DIRECTORY="/tmp/test-mounts/$(basename "$0" .t)"
 test -n "$root" && TRASH_DIRECTORY="$root/$TRASH_DIRECTORY"
 case "$TRASH_DIRECTORY" in
 /*) ;; # absolute path is good