diff --git a/beat/core/test/__init__.py b/beat/core/test/__init__.py
old mode 100644
new mode 100755
index 69f48e2d7aa5c55c36aa6bcff50e55d092486d18..c7d8a5c00b6899ef19cd447947054c3b701220b9
--- a/beat/core/test/__init__.py
+++ b/beat/core/test/__init__.py
@@ -35,7 +35,7 @@ import pkg_resources
 
 
 prefix = pkg_resources.resource_filename(__name__, 'prefix')
-tmp_prefix = tempfile.mkdtemp(prefix=__name__, suffix='.tmpdir')
+tmp_prefix = tempfile.mkdtemp(prefix=__name__, suffix='.tmpdir', dir='/tmp')
 
 
 def teardown_package():