diff --git a/tests/test_ifs_sim.py b/tests/test_ifs_sim.py
index 1412db4b20124bbbe3790b2656a91c34383695d1..9cdd9513d9eea5e542eea7198540e3baeacd8a47 100644
--- a/tests/test_ifs_sim.py
+++ b/tests/test_ifs_sim.py
@@ -37,7 +37,7 @@ class TestDemoFunction(unittest.TestCase):
         print(sys.version )
         ###configfile = dir_path+'IFS_inputdata/configData/IFS_sim_C90.config'
         
-        configfile = './ifs_data/IFS_sim_C90.config'
+        configfile = '/ifs_data/IFS_sim_C90.config'
       
         sourcein = 'SCI'
         print(configfile)