diff --git a/unix/syscall_linux_test.go b/unix/syscall_linux_test.go
index 3d2805bb..3c3bd816 100644
--- a/unix/syscall_linux_test.go
+++ b/unix/syscall_linux_test.go
@@ -52,6 +52,7 @@ func TestPpoll(t *testing.T) {
 		t.Skip("mkfifo syscall is not available on android, skipping test")
 	}
 
+	defer chtmpdir(t)()
 	f, cleanup := mktmpfifo(t)
 	defer cleanup()
 
diff --git a/unix/syscall_unix_test.go b/unix/syscall_unix_test.go
index ab65ce65..7adc3a24 100644
--- a/unix/syscall_unix_test.go
+++ b/unix/syscall_unix_test.go
@@ -426,6 +426,7 @@ func TestPoll(t *testing.T) {
 		t.Skip("mkfifo syscall is not available on android and iOS, skipping test")
 	}
 
+	defer chtmpdir(t)()
 	f, cleanup := mktmpfifo(t)
 	defer cleanup()