diff --git a/bioluigi/tasks/sratoolkit.py b/bioluigi/tasks/sratoolkit.py
index 58eed0a..514c2c8 100644
--- a/bioluigi/tasks/sratoolkit.py
+++ b/bioluigi/tasks/sratoolkit.py
@@ -74,6 +74,7 @@ def resources(self):
 
     def __init__(self, *kwargs, **kwds):
         super(FastqDump, self).__init__(*kwargs, **kwds)
+        self.temp_output_dir = None
 
     def program_args(self):
         args = [cfg.fastqdump_bin,
diff --git a/tests/test_sratoolkit.py b/tests/test_sratoolkit.py
index 65170d4..b9df022 100644
--- a/tests/test_sratoolkit.py
+++ b/tests/test_sratoolkit.py
@@ -13,7 +13,7 @@ def test_fastq_dump():
     assert '-M' in args
     assert 18 in args
     assert args[-3] == '--outdir'
-    assert args[-2].startswith('outdir-tmp')
+    assert args[-2] == 'outdir'
     assert args[-1] == 'srr_accession'
     assert 'fastq_dump_jobs' in fastq_dump_task.resources
     assert fastq_dump_task.resources['fastq_dump_jobs'] == 1